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BIOLOGY
FULLY REVISED EDITION

Previous 12 year’s HSE Questions

(Arranged Chapterwise & Topicwise)

Best resource to crack HSE

Minhad. M. Muhiyudheen MSc.

Guest HSST
IUHSS
Parappur, MALAPPURAM District

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ZOOLOGY
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 Grade: XI Chapter 1: The Living World
Previous Year’s HSE Questions-TOPIC WISE
CHARACTERS EXHIBITED BY LIVING 13. Arrange the following taxonomic categories in ascending
ORGANISMS order.
1. Life is the property that distinguishes living beings from non- Genus, Family, Order, Class, Species, Phylum, Kingdom
living things. List the main characters exhibited by living things. (1)(Imp 2018, March 2018, 2017, Sept. 2014)
(1) 14. Rearrange the following in the correct taxonomic
2. “Reproduction is not a defining character while describe the hierarchical sequence:
characters of living things”. Give examples (1) Chordata
↑
DIVERSITY IN THE LIVING WORLD
Primata
3. Carolus Linnaeus is known as father of taxonomy. State any ↑
2 contributions of Linnaeus. (1) (March 2007) Mammalia
↑
4. ICZN stands for- Homo
a) International Council of Zoological Nomenclature ↑
b) Indian Council of Zoological Nomenclature Hominidae
c) International Code of Zoological Nomenclature ↑
d) Indian Code of Zoological Nomenclature (1)(Model 2018) Sapiens (1) (March 2010)
5. Expand the following- 15. Which of the following suffixes used for units of classification
(a) ICBN in plants indicates a taxonomic category of ‘family’.
(b) ICZN (2)(Dec 2020) a. –ales b. –onae
c. –aceae d. none of the above
6. Binomial nomenclature was proposed by …………….
(1)(2019) 16. Fill in the blanks with suitable words given:
7. A student conceived the rules of binomial nomenclature as Family, class, genus, species, kingdom, order, phylum
follows. If you find any mistakes in the underlined portions,
correct them with appropriate words. a. The highest taxonomic category is …………….
a. The first word in biological name represents species and begins b. The lowest taxonomic category is …………….
with a capital letter. c. The assemblage of related species is …………..
b. The second word represents genus and begins with a small letter. d. ……………. category includes the related family.
(1)(Sept. 2015) e. An intermediate category between genus and order is …………..
8. The scientific name of house fly and wheat are given below. f. The category phylum is a part of hierarchy which exist between the
Correct them. …………. and …………. (3)
a) Musca Domestica 17. Rearrange both the biological category and taxon based on
b) triticumAestivum (1) taxonomical hierarchy.
9. Panthera leo [Hint- The last two terms of taxon will give the scientific name of
a) Identify the naming system used? housefly]
b) What do the 2 terms indicate? (1) Category Taxon
Phylum Musca
10. Select the correct generic name and specific epithet from Genus Insecta
the table given below and write scientific name of a housefly. Class Arthropoda
Generic Specific Species Domestica (1) (Oct. 2013)
name epithet
Mangifera domestica 18. A student placed man and housefly in the following
Musca tigris
taxonomic categories. Some of them are wrongly placed. Identify
and correct them.
(1) (Aug. 2014)
11. Musca domestica is the binomial nomenclature of housefly. Common Species Genus Family Order Class
(a) Identify the Generic name and specific epithet. name
(b) Mention the phylum and class of Musca domestica. Man Sapiens Homo Primata Hominidae Mammalia
(2)(2022) Housefly Domestica Musca Muscidae Insecta Diptera
OR (1) (Sept. 2010)
The common name ‘house fly’ is simpler than its scientific name 19. Complete the table using suitable terms.
‘Musca domestica’. Common Genus Species Class Phylum
a) What is a scientific name? name
b) What is the advantage of scientific naming? (2) Man …….. Sapiens Mammalia ……..
(1) (March 2015)
TAXONOMIC CATEGORIES TAXONOMICAL AIDS
12. Unit of classification is …………. (1)(2020) 20. Observe the first pair of words and write a suitable word for
a. Taxon b. Species the second pair.
c. Genus d. Cell Botanical garden: Living plants
………………….: Living animals (Sept. 2016)
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21. Taxonomical aids are very useful for classification and
identification of organisms. Name any two taxonomical aids.
(1)(March 2012)

22. During the adventurous trip, a plus one student got a skull and
skeletal part of rare animal from the Chinnar forest.
Select the suitable location for keeping it from the list of taxonomic
aids given below.
Herbarium, Museum, Zoological park, Botanical garden
(1) (March 2016)
23. Match the hexagons with stars correctly.

(2)(2021)
24. ………. is the taxonomical aid based on contrasting
characters generally in a pair called couplet. (1)(Imp 2019)

25. The description containing information on any one taxon is

called-
a. Flora b. Manual c. Monograph d. Key
(1)(Dec 2020)
26. After completing a project study based on diversity of spiders,
the specimens were intended to be stored for future reference.
Select a suitable taxonomical aid from the following for the
preservation of specimens.
a. Herbarium
b. Museum
c. Zoological park
d. Sanctuary (1) (March 2013)

27. Categorise the following terms in to two. Give suitable title

for each category.
Species, Museum, Class, Genus, Zoological Park, Herbarium
(1)(Sept. 2012)
28. The term “couplet” is related with taxonomic aid. Identify the
taxonomic aid. (1)

29. Give the terms.

a. The actual account of habitat and distribution of plants of a given
area.
b. Providing information for identification of names of species found
in an area.
c. Contain information on any one taxon.
d. Identification of plants and animals based on the similarities and
dissimilarities.

30. Note the relationship between the first two words and suggest
suitable words for the fourth place.
a. Collection of living plants : Botanical garden,
Animals kept in protected environment: ……………..
b. Homo sapiens: Man,
Musca domestica: …………… (1) (March 2011)

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 Grade: XI Chapter 4: ANIMAL KINGDOM

Previous Year’s HSE Questions-TOPIC WISE

BASIS OF CLASSIFICATION 12. A taxonomist described a new organism as triploblastic,

1. If you are given a specimen, what fundamental features are radially symmetrical, coelomate and without metameric
you consider classifying it? (2) segmentation:
a. What do you understand by each term of his description? (2)
2. Classify the animals on the basis of levels (grades) of b. Give an example of an organism of the same phylum that had
organization with examples. (3) described. (1) (Sept. 2010)

3. Observe the diagram. 13. Complete the Schematic Diagram. (3)(Imp 2019)

A B C
a. Identify the symmetry A, B and C
b. Give an account of types of symmetry in A, B and C

4. Categorize the following animals under radial and bilateral

symmetry.
Physalia, Tape worm, Fasciola, Adamsia
(2) (March 2017, Sept. 2010) CLASSIFICATION OF ANIMALS
5. Arrange the following terms under two headings based on NON-CHORDATA
symmetry. 14. Arrange the phyla in order (2)
Arthropods, Ctenophores, Molluscs, Coelenterates Arthropoda Platyhelminthes Porifera Protozoa
(2)(March 2018) Coelentrata Mollusca Annelida Echinodermata
6. What do you mean by diploblastic and triploblastic animal? Aschelminthes
Give examples. (2)
15. Name the distinctive character (responsible for their names)
7. a) Which of the following shows the body cavity of flatworm? of the following animal groups.
b) Label the different germ layers also a. Cnidaria b. Arthropoda
c. Porifera d. Annelida
e. Chordata f. Ctenophora (3) (March 2014)

16. What is the difference between direct and indirect

development? (1)(NCERT)

(3) 17. Name the flagellated cells which line the spongocoel and the
8. Among the different phyla of animals, …………. have canals in porifera. (1)
pseudocoelom. (1) (March 2017)
18. The flow of the sea water through the canal system of the
9. Fill in the blanks: sponges is shown using arrows. Fill the gaps marked as a & b with
Coelomate : arthropoda the help of the diagram given.
Pseudocoelomate : ------------------- (1) (Sept. 2012) (1) (Sept. 2010)

10. Find out the pseudocoelomate animal from the following:

Tapeworm, Hook worm, Earthworm, Honey bee
(1)(Model 2018)
11. Classify the organisms below based on segmentation:
Ascaris Taenia
Fasciola Wuchereria
Neries Pheretima
Hint:
True segmentation False No segmentation
Sea water → (a) → Spongocoel → (b) → Outside
(2) (March 2010)
19. Distinguish between intracellular and extracellular digestion.
(2)
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20. a) Identify the cell given in the diagram 28. a. Pick out the acoelomate organism from the following:
i. Roundworm
ii. Hookworm
iii. Filarial worm
iv. Tapeworm (1)
b. Name the phylum to which it belongs. (½)
c. Mention its mode of nutrition (½)
d. What is the coelomic condition of other organisms? Substantiate
your answer. (1) (March 2013)

b) Mention the name of animal phylum based on this cell. 29. Observe the relation between the first 2 terms and fill in
c) Mention the functions of the above structure the blanks. (1)(Model 2021)
(3) (2021, Sept. 2016) a) Acoelomate : Phylum platyhelminthes
21. The diagram given below shows the outline of 2 basic body Pseudocoelomate : …………………..
forms. b) Cnidoblast : Phylum Cnidaria
Radula : …………

30. A student of Class XI, collected some specimens during the

field trip conducted by the Science club. Help him to classify
these animals to their respective phylum/class.
A B (Spongilla, Ctenoplasa, Laccifer, Calotes) (2)(2021)
a. Identify A and B
b. Give the difference between A and B 31. Prawns and insects are included in phylum arthropoda while
c. Name the phylum which shows this body forms they have different habits and habitats. Justify your answer.
d. Mention the salient features of the phylum (1) (March 2015)
(4) 32. Observe the table given below and replace (a), (b), (c) and
22. Identify the word pair applicable to phylum ctenophora. (d) from those animals given in brackets.
a. Nephridia, Parapodia b. Comb plates, Bioluminescence (Hydra, Shark, Spongilla, Star fish) (2)(2021)
c. Polyp, Metagenesis d. Radula, Visceral hump
(1)(2020)
23. Ctenophores are commonly known as ………… (1/2)

24. During a seashore visit, a student collected two organisms.

Observing the morphology, it is clear that the organisms are
radially symmetrical. One of them shows bioluminescence. 1. Mention two functions of the following:
a. To which phylum does this organism belong? (1) (2)(2022)
b. Identify the possible phyla to which the other organism can be (a) Gills in Mollusca
included. (1) (b) Flame cells in Platyhelminthes.
c. Which distinctive feature of this organism will help you to
categorize it into a particular phylum? (1)(March 2013) 2. Complete the following table:
(2)(2022)
25. The characteristic features of an invertebrate is given.
“The phylum includes the comb jellies, also called walnuts. They are Genus name Common name
noted for their bioluminescence and comb plates”. Identify the Wuchereria A
phylum. (1) (March 2016) B Silk-worm
Pheretima C
26. D Honey-bee

3. Comment on the symmetry of phylum Porifera and phylum

Echinodermata. Name the system of transport of food in the
members of these phylums. (2)(2022)

33. Characters of a marine invertebrate is given.

* Spiny skinned body
* Presence of water vascular system
A B a) Identify and write the phylum
a. Identify the animals A and B. b) Write any 2 functions of water vascular system among them.
b. Mention their parasitic adaptations. (2) (Sept. 2016)
c. Name the specialized cells that help in osmoregulation and 34. Identify the phylum whose larvae are bilaterally symmetrical,
excretion in these animals but adults are radially symmetrical?
d. In which phylum they belongs? (4) a. Annelida b. Arthropoda
c. Mollusca d. Echinodermata
27. Note the relation in the first pair and then complete the Mention any 2 salient features of the phylum.
second pair. (1)(Imp 2018) (1)

Faciola : Liver fluke

Taenia : …………..

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35. Organisms of this phylum are radially symmetrical, 43. Complete the columns using the appropriate phylum,
triploblastic and coelomate with complete digestive system. distinctive features and excretory organs.
a. Identify the phylum (½)
Phylum Distinctive feature Excretory organ
b. Give an example for this phylum (½)
a) ……………..
Platyhelminthes b) …………….
c. What are the distinctive features of this phylum? (1) (Sept. 2012)
Arthropoda c) ……………….. Malpighian tubules
36. Observing starfish in a marine aquarium your friend Body segmentation
d) ………………… e) ……………….
commented that it is a lower invertebrate without distinct head, like rings
eyes and legs. Do you agree with him? Evaluate his statement Water vascular Excretory system
f) ……………….
with reasons. (2) (Oct. 2013) system absent
(6 x ½=3)(March 2011)
37. The following are organs of certain animals: 44. Match column I with II (4 x ½=2)
(2)(Imp 2019) Column I Column II
Parapodia a) Cold blooded animal Platypus
Flame cells b) Living fossil Sea cucumber
Proboscis gland c) Egg laying mammal Limulus
Comb plates d) Water vascular system Shark
Peacock
a. Select organs helps in excretion. Earthworm
b. Name the organism bearing these organs and write its
(March 2012)
phylum.
45. Assign the following features of animals given in column A to
the most appropriate animal phylum given in column B.
38. Observe the figures. (3)(2020)
Column A Column B
a) Metamerism i) Ctenophora
b) Spiny endoskeleton ii) Platyhelminthes
c) Comb plates iii) Annelida
d) Flame cells iv) Cnidaria
v) Echinodermata
vi) Porifera
vii) Hemichordata
(2)(Sept. 2015)
46. In your practical, the class teacher brought the following
preserved animals.
a. Balanoglossus b. Pila
c. Tapeworm d. Physalia
Identify the phylum of each animal and select a distinguishing
A B C
character of each phylum from the flowing table:
a. Identify the organisms A, B and C.
1. Presence of comb plates
b. Name the phylum to which each of them belong.
2. Presence of Flame cells
3. Presence of Radula
39. Is it possible to compare the water vascular system of phylum
4. Presence of Malpighian tubules
Echinodermata to circulatory system of man in some aspects?
5. Presence of Proboscis gland
Justify your answer. (2)(Sept. 2012)
6. Presence of Cnidocytes
7. Presence of Notochord (4) (Aug. 2014)
40. ‘Phylum mollusca is the second largest animal phylum’.
a. Name the largest phylum of animalia. 47. Look at the diagram a, b, c, d and e given below:
b. Give 3 reasons why a snail and an octopus are classified
under the phylum mollusca
c. Name the file-like rasping organ for feeding present in
mollusca
d. Write the scientific name of pearl oyster.

41. Who am I?
* I live in the sea
* I have organ system level of organization
* I respire through gills
* I excrete by proboscis gland
* My body is composed of proboscis, collar and a long trunk.
(a) Identify the phylum of the animal by considering the clues given a b c
below
(b) Give one example from that phylum (2)
42. During a field trip a group of students collected some
organisms with following characters. Help them to identify the
phyla of those organisms.
a. Dorso-ventrally flattened and leaf like body.
b. Jelly like body with eight ciliated comb plates. d e
c. Body covered with calcareous shell. a) Write their names
d. Spiny skinned body with radial symmetry. (2) (Oct. 2011) b) Write one characteristic feature of each (5) (March 2008)
BIOLOGY Instant Notes-for HSS LiVE.IN, by: Minhad. M. Muhiyudeen, #- 9846 29 22 27 36
48. Name the organs for the given functions: 57. Jaw present: Gnathostomata
a. Organ for the excretion and osmoregulation in tape worm Jaw absent: ………………. (½)
b. Locomotory organ in ctenophora
c. Anchorage, defence and capture of prey in cnidaria 58. a) Name 2 cyclostomes, which migrate for spawning to fresh
d. Organ for swimming in nereis water.
e. Rasping organ for feeding in mollusca b) How do cyclostomes differ from familiar fishes? (3)
f. Excretory organ in hemichordata
59. The following are the key characteristics of an animal group.
49. Match the following: Circular and sucking mouth without jaws.
A B
a. Sea Hare i. Antedon Fish-like body without scales and paired fins.
b. Sea pen ii. Adamsia a. Name the class in which this animal belongs.
c. Sea fan iii. Aplysia b. Give two examples from this class. (2) (Oct. 2013)
d. Sea lily iv. Gorgonia
e. Sea anemone v. Pennatula (2) 60. “All vertebrates are chordates but all chordates are not
vertebrates.” Evaluate and substantiate the statement.
50. The peculiar features of different phyla are given below. (2) (Imp 2019, 2015)
Identify the phyla. 61. Fill and complete the chart given below.
a. Presence of ostia, osculum and choanocytes Chordata
b. Presence of ciliated comb plates and exhibit bioluminescence
c. Body shows metameric segmentation and nephridium is the …………… Cephalochordata …………..
excretory organ
d. Body with chitinous exoskleton and joined appendages. Pisces ………….
(2)(Model 2021)
51. Name of certain animals is given below. Write the phylum (2) (March 2009)
of each animal.
a. Pila 62. Complete the flowchart given below. (2)(2019, July 2017)
b. Pleurobrachia
c. Nereis
d. Balanoglossus (2)(Imp 2019)
52. Name the distinctive character (responsible for the group
names) of the following animal:
(a) Ctenophora (b) Echinodermata
(c) Mammalia (d) Chordata
(e) Annelida (f) Arthropoda (3)(2021)
53. Match the Column A with Column B (2)(Dec 2020)
Column - A Column - B
Platyhelmithes Gills
Annelida Malpighian tubule 63. Observe the diagram given below.
Arthropoda Flame cells
Mollusca Nephridia

CHORDATA a. Identify the class in which it belongs.

54. Your Biology teacher exhibited a laboratory specimen in the b. Write a note on its migration. (2)(Model 2021)
classroom. Based on which features will you distinguish it as a
chordate or a non-chordate? (3) (March 2014) 64. Find the relationship between given words and suggest the
suitable words for the fourth place.
55. Rearrange the following statements in two column table and a. Annelida : Nephridia, Arthropoda : ………………
give suitable heading for each group. b. Osteichthyes : Cycloid scales, Chondrichthyes : ………………
Notochord is present, Post anal tail is absent, (1)(March 2018, 2016, 2012)
Pharynx is perforated by gill slits, Notochord is absent,
Post anal tail is present, Gill slits are absent 65. Unlike bony fishes, cartilage fishes are swim constantly to
(2) (Oct. 2011) avoid sinking due to the-
56. The diagrammatic sketch given below represents a a. Presence of pharyngeal gill slits.
hypothetical chordate. b. Presence of air bladder.
c. Absence of pharyngeal gills slits.
d. Absence of air bladder. (1)(Imp 2019)
66. Figure (A) and (B) shows the fishes of two different classes.

a. If you find any mistakes in the labelled parts, copy the diagram and
make necessary corrections in the labelling.
b. Based on any two labelled parts in the diagram, mention how this a. Identify and differentiate between them.
phylum differs from non-chordates. b. Write an examples for each (2)(2021, Model, 2015)
(2)(Imp 2018, March 2016, Sept. 2015)
BIOLOGY Instant Notes-for HSS LiVE.IN, by: Minhad. M. Muhiyudeen, #- 9846 29 22 27 37
 77. Identify the group/ organism.
4. Write any 3 differences between chordates and non- a) A chordate group in which notochord is present only in the larval
chordates. (3)(2022) stage.
67. Find the odd one from each group. Justify your answer. b) An animal commonly known as ‘devil fish’.
(3)(2019) c) A limbless amphibian (3)
a. Star fish, Devil fish, Dog fish, Jelly fish
b. Flying fish, Angel fish, Saw fish, Fighting fish
c. Sea lily, Sea cucumber, Sea hare, Sea urchin 78. a) Classify the given organisms under the heading
poikilothermous and homoithermous.
Rat, Frog, Dog fish, Ostrich
68. Scolidon, Pristis, Carcharadon, and Trygon are the
b) Define the terms poikilothermous and homoithermous.
examples of a class in vertebrata.
(2)(Model 2018)
a. Mention the class.
79. Name the following
b. List out any 5 characters of the class. (3)(Dec 2020)
a) Phylum in which flat worms are included
b) Excretory organs of annelids
69. a) Identify the organism. (2)(2019, Model 2018)
c) Largest phylum
d) An oviparous mammal. (2)

80. Pick out the correct word from the list provided and complete
the following sentences:
Pinna, Echinodermata, Metamorphosis, Protochordates,
Pseudocoelomates, Spicules, Bilaterally symmetrical,
Polymorphism, Radially symmetrical, Coelomates, Mollusca
a) The process of formation of larva into adult is ………………
b) Structurally and functionally different types of individuals within
b) Name the class in which it belongs to? the same organism are called …………….
c) Write any one characteristic feature of the class. c) Animals having a false body cavity are called …………..
d) The body can be divided into 2 identical left and right halves in
70. Match column B and C with column A. …………….. animals
A B C e) The ……………. forms the internal skeleton in sponges
Reptilia Feathers Psittacula f) Sea cucumber belongs to …………….. phylum
Aves Mammary glands Hyla g) Hemichordates are …………….
Mammalia Parapodia Chelone h) Presence of ………….. is a mammalian character.
Scales Panthera (4) (March 2006)
Tube feet scoliodon
81. Name the animal with following characters:
(2) (March 2010) i. Cyclostomes with circular mouth.
71. Frogs, Salamanders, Tortoise and Crocodiles are seen in both ii. Chondrichthyes with electric organ
water and land. But they are classified into two different classes iii. Flightless bird
of the phylum vertebrata. Evaluate this classification comparing iv. Egg laying mammal
salient features of each class. (2)(Oct. 2013) v. Gregareous pest
vi. Aquatic annelid
72. Find the relationship between first pair and fill in the blank. vii. Flying mammal
a. Salamander: Amphibia viii. Living fossil (4)
Chameleon: …………… (1)(Aug. 2014)
82. a) A table showing examples of vertebrates given below. But
73. Birds are well adapted for flying. Give any three of such some of the examples are wrongly given. Identify and rearrange
adaptations. (3) (March 2015) it.
74. Observe the following features of animals and answer the Pisces Amphibia Reptilia Aves Mammalia
following questions. (1) (Sept. 2015) Dog fish Frog Vulture Penguin Alligator
Moist skin Blue whale Rohu Tortoise Salamander Flying fox
Hooks and suckers
Pneumatic bones b) Which one of the above mentioned class is characterized by the
Dry and non-glandular skin presence of pneumatic bones? (3)(March 2018)
Metamerism
a. Select the flight adaptation of birds. 83. Apply the scientific words for each of the following statements.
b. Select the amphibious adaptation of frog. a. Water cavity found in sponges
b. Cold blooded animals
75. Bats and whales belong to the same class. c. Cells which are known as organelles of offense and defense in
a. Identify the class hydra.
b. Give reasons (3) d. Bones with the presence of air cavities
e. Blood filled cavity in arthropods
76. Identify an oviparous mammal from following example: f. Animals which give birth to young ones
a. Pteropus b. Ornithorhynchus g. Coelome present in the aschelminthes (3)
c. Balenoptera d. Equus (1)(Dec 2020)

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84. Match the items in column B and C with A
Phylum/ Class Common example Unique feature
Pisces Aedes Presence of hair
Mammalia Leech Open circulatory
system
Arthropoda Felis Presence of 2
chambered heart
Scolidon Presence of nephridia
OR
Features of different phyla/ class are given below. Identify the
phylum/ class and give examples of each group.
a) Body is covered by scales, heart is 3 or 4 chambered. They
respire through gills.
b) They are exclusively marine, commonly called sea walnuts and
shows bioluminescence.
c) Body is divided into proboscis, collar and trunk. They have
open circulatory system and presence of proboscis gland.
(3) (March 2017)

85. Name the phyla in which the following cells/ structures/ organs
are present.
a) Radula
b) Cnidoblast
c) Pneumatic bone
d) Proboscis gland (2) (March 2016)

86. Mention a single word/term for the following:

(a) File like rasping organ in molluscans.
(b) Property of a living organism to emit light.
(c) Alternation of generation in Cnidarians.
(d) Hollow bones with air cavities. (2)(2021)

87. Characteristics of certain animals are given.

Arrange them under the ‘class’ to which these animals belong.
(a) Skin is moist without scales.
(b) Body is covered by dry and cornified skin.
(c) Shed the scales as skin cast.
(d) Can live in aquatic as well as terrestrial habitats. (2)(2020)

88. Match the following (2)(Model 2021)

A B
Reptilia Salamandra
Mammalia Alligator
Aves Pteroptus
Amphibia Convus

BIOLOGY Instant Notes-for HSS LiVE.IN, by: Minhad. M. Muhiyudeen, #- 9846 29 22 27 39

 Grade: XI Chapter 7: STRUCTURAL ORGANISATION IN ANIMALS
Previous Year’s HSE Questions-TOPIC WISE
ANIMAL TISSUES 7. Fill in the blanks. (3)(2019)
1. Observe the following diagrams. Types of Simple
Location Function
Epithelium
Squamous
a. …….a…… Diffusion
Epithelium
Ducts of glands and
b. ……..b……. tubular parts of ……c…..
nephrons in kidney
Columnar Secretion and
c …..d…..
epithelium absorption
a. Identify the simple epithelium tissues A, B, C and D. Inner surface of
b. Write their location in our body. d …..e….. bronchioles and …..f…..
c. Mention their functions. fallopian tubes
2. a) Among the following body parts, squamous epithelium is
2. How does exocrine gland differ from endocrine glands?
found in ………….
Name 2 secretions of exocrine glands. (2)(2022)
i. the ducts of glands and tubular parts of nephron.
ii. the lining of stomach and intestine
1. (a) Identify the tissue and state its main function.
iii. the inner walls of blood vessels and air sacs of lungs.
iv. the inner surface of bronchioles and fallopian tubes.
b) Write any 1 function of compound epithelium.
(1)(Imp 2018)
3. Study the flow chart
Epithelial tissue
(b) Write two regions in human body where you can find this
Simple Compound tissue. (2)(2022)

Squamous Cuboidal Columnar 8. Cell junctions provide both structural and functional links
between its individual cells.
a. Write the general characters of epithelial tissue. Name and comment on the different types of cell functions.
b. Distinguish between simple and compound epithelium (2)(2021)
c. Name the functional modification of cuboidal or columnar 9. Cell junctions are the most important parts of the animal
epithelium get specialised for secretion. tissues.
a. Write any two types of cell junctions. (1)
4. Observe the following chart and answer the given questions: b. Mention their function. (1)(Model 2020)
Glandular epithelium 10. Complete the given branching diagram based on connective
tissue:
Connective tissue
Unicellular Multicellular
E.g.: …A… E.g.: Salivary gland
Loose connective Dense connective ………A………
tissue tissue

Endocrine gland ……B…… Regular ….C……

E.g.: Pituitary E.g.: Liver ….D…. Blood
Fill in the missing words A and B. (2) (March 2016) Areolar tissue ……B.… Bone
(2) (Model 2021, March 2017)
5. Name any two secretions of exocrine glands. (1) (Sept. 2015) 11.

6. Features of a particular tissue visible through a microscopic

observation is presented here.
* Cells are closely arranged
* Intercellular matrix absent
* Cells are supported by basement membrane.
a) Identify the animal tissue.
b) Classify this tissue based on the number of cell layers. a. Identify the diagram.
c) Mention their functions (2) (Oct. 2013) b. Name the cells marked A, B, C and D.

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10. Collagen and elastin are synthesised by 19. Observe the picture A and B.
a. Fibroblast b. Macrophages a. Identify the figures A and B.
c. Mast cell d. adipocytes b. Write any one characteristic feature of each A and B.
12. a) Identify the given diagrams of connective tissues A and B.

b) Write one example for A and B. (2) (Dec 2020, Sept. 2016) A B (2)(Model 2020, 2018)

13. Observe the schematic diagram of a tissue.

20. Observe the following figure. No need to redraw the diagram.
Matrix

Fibers

a) Identify the type of the tissue.

b) The fibres in this tissue help the tissue to perform its function.
Substantiate. (2)(Sept. 2012) a. Label the parts A and B (1)
14. Name the tissue which is specialized to store fat. b. Write the function of B (1) (March 2011)
(1)(Model 2021) 21. (a) Identify the tissues based on the features given below:
15. Observe the diagram i. Intercalated disc
ii. Involuntary in action
(b) Mention the function of intercalated disc.
(2)(Imp 2019)
22. Besides support and protection, does skeletal system have
any other functions?
23. Is there any differences between a cartilage and a bone? List
out them?
Hints:-
Cartilage Bone
a. Identify A and B i. Semi-rigid and flexible Rigid and strong.
b. Differentiate them. ii. Cells are known as Cells are known as osteocytes
16. Observe the diagrams given below: (1)(Imp 2018) chondrocyes
iii. Matrix contain chondroitin Matrix contain calcium salts
salts.
iv. Each lacuna has 2-3 Each lacuna has a single
chondrocytes osteocytes

24. Identify the word pair relation and fill in the blank:
a) Bone : osteocyte :: Cartilage : ……………. (1)(Model 2018)

25. Tendons and ligaments are examples of ………. tissues.

a. Areolar b. Adipose
(A) (B) c. Dense regular d. Dense irregular (1)(2019)
a) Identify the tissue A and B.
b) Name the specialized cells present in A and B. 26. Rewrite the given sentences if there is any mistake in the
17. Complete the schematic diagram. underlined part.
 Cartilage cells are called osteocytes.
Muscular Tissue  Bones are rich in calcium salts.
 Intercalated discs are seen in skeletal muscles
 Skeletal muscles are striated. (2)(2020)
Skeletal Muscle …….b……. …….d……
eg …..a……. eg…..c…….. eg : Heart 27. ‘Neural tissue is formed of neurons and neuroglia cells’.
(2)(Dec 2020) a. Name the important properties of neural tissues.
18. Facts related to two types of tissues are given below. Arrange b. State the function of neuroglial cells.
them in 2 columns by giving suitable headings. Mention the c. Name the basic unit of neural system.
location of each tissue in the human body. d. Name the parts of neuron.
 A sheath of tough connective tissue i. That carries impulse towards the cell body.
 Striations absent ii. That transfer the impulse away from cell body.
 Bundled together in a parallel fashion iii. Part which protects axon.
 Fusiform shape
 Involuntary in function
 Striated appearance (4)(March 2012)
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28. Identify the following tissues. 38. Can you distinguish between a male and female cockroach?
a. Tissue that conducts impulses Hints are given.
b. Tissue which store fat Male Female
c. Tissue that connects muscle and bone Larger ………………
d. Tissue that connects bones together …………….. Broad abdomen
(2) (March 2018, Oct. 2011) Anal cerci and anal
29. Names of two animal tissues are given: styles present. ……………….
a. Cardiac muscle tissue b. Adipose tissue (2)
i. Write the location of these tissues in our body. 39. Answer in one word or one line.
ii. Select the accurate character of each tissue from the items i. Give the common name of Periplaneta Americana.
given below. ii. What is the position of ovaries in cockroach?
1. Cells of this tissue are specialized to store fat. iii. How many segments are present in the abdomen of cockroach?
2. Cells of this tissue (chondrocytes) are seen in small cavities
within the matrix. 40. The mouth parts of the cockroach are given below. If there is
3. Presence of intercalated discs. (2) (Aug. 2014) any error, correct it properly.

30. Arrange the columns A, B and C in the table below and match
them properly.
A B C
1. Squamous i. Intercalated disk a. Present between vertebrae
Hypopharynx Maxilla Labrum Labium Mandible
epithelium
2. Cartilage ii. Dentrites b. Helps in gas diffusion in lung
3. Cardiac muscle iii. Chondrocytes c. Impulse transmission 41. A schematic sketch representing the alimentary canal of a
4. Neuron iv. Flattened cells d. Helps in heart beat. cockroach is given below. Fill the boxes with appropriate organs
v. Volkman’s canal e. Antibody formation from the list. No need to redraw the diagram.
(2) (March 2009) Crop, Salivary gland, Gizzard, Rectum,
31. Fill up the gap. Malpighian tubules, Hepatic caeca
Endocrine glands are ............... (with duct, without duct)
(1) (March 2006)
32. Where do you find the following structures in a human body?
a) Collagen fibres e) Ciliated epithelium.
b) Axons f) Chondrocytes
c) Squamous epithelium g) Cardiac muscle
d) Smooth muscles h) Anal style
i) Phallic gland (2)(March 2014)

33. Distinguish between-

a. Simple and compound epithelium.
b. Cardiac and striated muscle.
c. Dense regular and irregular connective tissues.
d. Adipose and blood tissue.
e. Unicellular and multicellular gland. (NCERT)(5)
(2)(2021, March 2018)
Mention the function of (b), (c), (d) and (e).
34. Spot of odd one out and justify your answer.
(a) 1. Cuboidal 2. Adipose 3. Squamous 4. Columnar
42. Mention the functions of the following:
(b) 1. Neutrophil 2. Eosinophil 3. Monocyte 4. Basophil
a. Hepatic caeca of ‘Periplaneta americana’.
(c) 1. Dentrites 2. Axon 3. Nissl bodies 4. Lymphocyte
(1)(Aug. 2014)
(2) (March 2007)
43. In cockroach, spiracles are present in ................
(d) 1. Areolar tissue2. Blood 3. Neuron 4. Tendon
a) Alimentary canal
(e) 1. RBC 2. WBC 3. Platelet 4. Cartilage
b) Tracheal system
(f) 1. Connecive 2. Columnar 3. Epithelial 4. Muscular
c) Malpighian tubules
d) Reproductive system (1) (March 2017)
COCKROACH
35. Select the odd one out in the following series. (1) (Sept. 2015) 44. Cockroach lacks respiratory pigment. How is O2 transport
a. Areolar tissue, Blood, Neuron, Tendon possible in it? (1)
b. Hypopharynx, Malpighian tubules, Maxillae, Labrum
45. In cockroaches, blood vessels are poorly developed and open
36. The male and female cockroaches can be identified by the
into spaces.
differences in morphological features.
a. Which type of blood vascular system is found in cockroach?
a) Name this phenomenon
b. What do you mean by the term ‘Haemocoel’?
b) Give one external difference between male and female
c. What is the peculiarity of
cockroaches. (2)(2021, March 2015)
(i) Blood in cockroach
37. What you mean by the terms. (ii) Heart in cockroach.
a. Sclerites
b. Tegmina

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 56. Reproductive system of female cockroach is given below.
46. Following are the characteristics of the blood vascular system
of an animal.
(a) No blood vessels.
(b) Blood is colourless
(c) Heart with 13 chambers
Identify the animal. Which type of circulatory system is this? (1)

47. While dissecting a cockroach to display its digestive system, a

student observed certain thick white tubules and yellow coloured a. Identify the parts A, B, C, D and E.
thin filamentous structures. Teacher explained that white tubules b. Mention the functions of the parts C, D and E.
are parts of respiratory system and yellow tubules are parts of c. Write the position of ‘A’ in female cockroach.
excretory system. d. What do you mean by ‘paurometabolous’ development?
a. Name the tubules.
b. Draw a flow chart showing the flow of air through the respiratory 57. In an informal discussion in your class, your friend made a
system in cockroach. comment that ‘cockroaches are harmful animals’. How will you
c. Why cockroach is called as ‘uricotelic’? (1) evaluate this statement?
48. ‘Cockroach is said to be Uricotelic’
a. What do you understand about the nature of excretion of
cockroach from this statement?
b. Name two excretory organs of Cockroach. (2)(2020)
49. If the head of the cockroach is cut off, it will be alive for as
long as one week. Give clarification for this statement.
(1)(2022, March 2015)
50. Compound eyes are the visual organs in cockroaches.
a. Name the functional unit if cockroach eye.
b. What do you mean by ‘mosaic vision’ in insects?
c. Name the sense organs in cockroach.

51. In an informal discussion in your class, your friend made a

comment that “Malpighian tubules are the kidneys of a
cockroach.” How will you evaluate this statement?
(1)(March 2010)
52. Prepare two correctly matched pairs from the given terms.
(Ommatidia, Cardiac tissue, Intercalated disc,
Malpighian-tubules, Sense organ, Goblet cell) (1)(2021)
53. Identify the function of the following structures of
cockroaches: (2)(Imp 2019)
a. Compound eye b. Arthrodial membrane
c. Seminal vesicle d. Malpighian tubule
54. Prepare 2 correctly matching pairs from the given terms.
Ommatidia
Hepatic caecae
Genital pouch
Sense organ
Excretory organ
Digestive gland
Upper lip (2) (Sept. 2016)
55. Cockroaches are dioecious and both sexes have well developed
reproductive organs.
a. What is dioecious condition?
b. Mention the position of testis in male cockroach.
c. Name the gland which functions as an accessory reproductive
gland in male cockroach.
d. What are spermatophores?

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 Grade: XI Chapter 9: BIOMOLECULES

Previous Year’s HSE Questions-TOPIC WISE

MICROMOLECULE 11. ‘Fats and oils are fatty acids’. How will you distinguish them?
1. What are micromolecules? Give examples.
12. Name the phospholipid which is found in cell membrane.
2. Why lipids are not strictly a macromolecule? (2)
13. Observe the following diagrams and answer the questions.
2. Find the odd one from each group. Justify your answer. (1)
a. Glutamic acid, Lysine, Valine, Collagen
(Sept. 2010)
3.

(A) (B)

a. Identify the compound (½)

b. Name the bond produced when another biomolecule of the
same category combines with this. (½)
c. If a number of such molecules are bonded together, what (C) (D)
will be the resultant molecule? (½) (March 2013)
a. Identify A to D (2)
4. The molecular structure of 2 amino acids are given below.
b. Name the compound obtained by the fusion of 1‘C’ and 3 ‘D’.
Name them.
(1)(Oct. 2011)
14. Identify the given biomolecules.

(2)(March 2018)
OR
Write the structure of-
(a) Alanine (b) Glycine (2)(2021)
A B C
(3) (March 2017)
5. Match the column B and C with A
A B C MACROMOLECULE
Acidic amino acid One amino group and one carboxyl group Lysine 15. What are macromolecules? Give examples.
Basic amino acid One amino group and two carboxyl group Valine
Neutral amino acid Two amino group and one carboxyl group Glutamic acid 16. Fill in the blanks:
Carbohydrate : sugars, Proteins: ------------------ (1)
6. Name any 2 aromatic amino acids. (Sept. 2012)
17. Complete the following sequence with appropriate words.
7. ‘In solution of different pHs, the structure of amino acids Amino acids: ….. (a) ….. bond: Proteins
changes’. Give reason. ….. (b)….. ..: Glycosidic bond: Polysaccharides
(1) (Model 2018, Sept. 2015)
8. General formula of an amino acid is given below. 18. A peptide bond formation between two amino acids is
accompanied by the
a. addition of H2O b. deamination
c. decarboxylation d. removal of H2O

19. a) Name the biomolecule (polymer) in which the peptide bond

a. Prepare its zwitter ionic form. is present.
b. What happens to the zwitter ion if it is placed in an acidic b) Name the bond present between phosphate and hydroxyl
medium? group of sugar in nucleic acids. (2) (Sept. 2016)

9. Identify the given molecule that comes under fat. 20. (a) Why are proteins heteropolymers?
(b) Identify the protein from the given list of
biomacromolecules and write its function.
(Cellulose, Starch, Antibody, Inulin).
(c) Identify the type of protein structures of A and B and
name the bond which stabilizes it.

(1) (Sept. 2016)

10. Give an example for the saturated fatty acid.

97
 28. Fill in the blanks marked as a, b, c and d. (2) (Sept. 2010)
Base Nucleoside Nucleotide
Adenine Adenosine Adenylic acid
Guanine ……a……. Guanylic acid
…..b…… Cytidine Cytidylic acid
Thymine …….c…… ……..d………

29. Differentiate between type of pentose sugar in DNA and RNA.

A B
(d) Mention the other 2 levels of protein structure. 30. Classify the following nitrogen bases as purines and
(3) (2019, Aug. 2014, March 2015) pyramidines.
2. (a) Identify the level of protein structure in the given (Adenine, Thymine, Uracil, Cytocine, Guanine)
diagram. (3)(2022)
31. Observe the molecule given below and answer the following
questions.

(b) Name two levels of protein structure which are not three
dimensional.
(c) Give an example for protein having quaternary structure and
justify your answer.

21. What is meant by Quaternary structure of protein? Give one a. Identify the molecule (½)
example. (2) b. What is this model called and who proposed the model?
c. Label 1 and 2. (1)
22. Select the wrongly matched pair from the following: d. Mention any 3 structural details of the molecule shown in the
Collagen Intercellular ground substance diagram. (1½)(March 2012)
Insulin Hormone
32. Name the chemical bonds formed between the following:
Antibody Secretory reception
a. Amino acids in a protein molecule. (½)
Trypsin Enzyme b. Sugar and phosphate in nucleic acids. (½) (March 2014)
(1) (March 2017)
METABOLISM
23. What is GLUT-4. Write its function.
33. ‘Metabolic pathways include anabolic pathway and catabolic
pathway’.
24. Name the most abundant protein in-
a. Distinguish between anabolic and catabolic pathways giving
a. Animal world b. Biosphere. (1)(2022, 2019)
examples.
25. The figure shows the bonding of a biomolecule. b. Name the energy currency of living system.

34. Which one is anabolic reaction?

a. Glucose Glycogen
b. Glucose CO2 + H2O
35. Metabolites are organic compounds constantly utilised in
various metabolic activities in the cells.
a. Identify the monomer. a) What are the 2 types of metabolites in cells?
b. Name the bond between the molecules. b) Give an example for each type of metabolites.
c. Name the macromolecule formed. (2) (March 2016)
36. Which among the following is a primary metabolites?
26. When starch solution treated with iodine, solutions turns to
blue colour. But cellulose doesn’t. Give reason. Alkaloid, Antibiotics, Amino acids, Flavinoids (1)(2020)
27. Diagrammatic sketch of a nucleotide is given.
37. Select the odd one out.
[Lectins, Alkaloids, Amino acids, Drugs] (1)(Model 2021)

38. Classify the compounds given below as primary metabolites

a. Label A, B and C and secondary metabolites giving reason.
b. How can you differentiate a nucleoside from a nucleotide? (Sugar, Lipids, Antibiotics, Alkaloids, Amino acids,
Gums, Essential oils, Nucleotide, Flavanoids)

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39. Observe the following representation and fill up the blanks 45. Observe the graph showing the activity of an enzyme
appropriately. (1 ½)(March 2013) influenced by pH.

Metabolites

Primary
Metabolites …….A…….

a. Name the possible enzyme involved in this reaction. (½)

Alkaloids ……..C……. b. Where is its site of action? (½)
……..B…….. Sugar
c. Mention any other factor which affects this enzyme activity
that results a similar pattern of graph. (½)
ENZYMES d. Name similar enzyme acting on the same substrate. (½)
40. ‘Enzymes are biocatalyst, which accelerates the rate of (March 2013)
biochemical reactions’. 46. Observe the graph and answer the following:
a. List the important properties of enzymes.
b. What does the term ‘active site’ refers to? Mention its significance.
c. What are ribozymes?

41. a) Complete the diagrammatic representation showing the

nature of enzyme action.
E+S ES ……a…… E + ……b……..
b) Explain the catalytic cycle of the enzyme on the basis of above
equation. (3)(Dec 2020, 2016)
c) List out any 2 factors affecting enzyme activity
d) Based on the reaction formulae given below, identify the class of
enzymes. a. Find out the role of enzyme. (1)
b. Mention any two factors that influence the activity of an
i. S reduced + S’ oxidised S oxidised + S’ reduced enzyme and state their influence. (2) (Imp 2018, Oct. 2013)
X Y 47. Observe the graph:
ii. C – C C = C+ X – Y (3) (March 2018)

42. Which enzyme is known as fastest enzyme?

43. Analyse the graph showing the activity of an enzyme,
influenced by temperature.

a. What is meant by Vmax value?

b. Why Vmax not exceeded by any further rise in the substrate
concentration? (3)(Model 2018)
OR
When substrate concentration increases, the velocity of
a. What is meant by optimum temperature? enzymatic reaction increases at first. After attaining a
b. Why does the enzyme activity decline at too low and too high maximum velocity, it cannot be exceed by further addition of
temperature? (2) (2021, March 2015) substrate. Why? (2)(2020)
44. Analyze the graph showing the activity of salivary amylase. 48. The enzyme that joins together molecules by forming new
covalent bonds are
Activity of salivary amylase

a. Oxidoreductase b. Transferases
c. Lyases d. Ligases
49. Study the reactions and name the type of enzyme which
catalyses it.
a. S – G + S’ S + S’ – G
b. S reduced + S’ oxidised S oxidised + S’ reduced
70 170 270 370 470 X Y
Temperature
c. C – C C = C+ X – Y
a. Which is the optimum temperature for salivary amylase
obtained from the graph? (½)
b. Why the activity declines below the optimum value? (½)
(Sept. 2012)

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50. Complete the table.
Class of enzyme Action
…….A…….. Catalyse oxidoreduction between two
substrate
Transferase …..B……
……C……. Catalyse hydrolysis of ester –glycosidic or
C-C bonds
Lyases …..D…..
……E…… Catalyse the interconversion of optical or
geometrical isomers
Ligases …..F……
(3) (2019, March 2009)
51. Non-protein constituents called cofactors are bound to the
enzyme to make the enzyme catalytically active.
a. Name the protein portion of the enzyme. (½)
b. What happens to the catalytic activity when the cofactor is
removed from the enzyme? (½)
c. Mention any two kinds of cofactors with examples. (2)
(March 2021, 2011)
52. Symbolic representation of a functional enzyme is given below.

a. Write one difference between a co-factor and an apoenzyme. (1)

b. Name the different types of co-factors. (1)
c. What is the co-factor for the enzyme, Carboxypeptidase? (1)
(August 2014)
53. Differentiate between-
a. Apoenzyme and Coenzyme
b. Lyases and Ligases (2)(Model 2020)

54. Distinguish between cofactor and coenzyme with an example

for each. (2) (March 2014)

55. Give examples-

a. Prosthetic group
b. Co-enzyme
c. Metal ion required for enzyme activity.

56. Give name for the following:

a. Building-up process in metabolism
b. Enzyme that catalyses the transfer of a group of a substrate to
another.
c. Organic cofactor tightly bound to apoenzyme.
d. Protein that fight against infectious agent.
e. Polysaccharide present on exoskeleton of arthropods.

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 Grade : XI Chapter 17: BREATHING & EXCHANGE OF GASES
Previous Year’s HSE Questions-TOPIC WISE
RESPIRATORY SYSTEM 7. Differentiate the process of inspiration and expiration.
1. Match the following: Inspiration Expiration
A B .................................. ..................................
a. Earthworm i. Lungs .................................. ..................................
b. Prawn ii. Tracheal system (2) (March 2017)
c. Insect iii. Cuticle 8. What are the changes taking place on ribs, diaphragm and
d. Mammal iv. Gills volume of lungs during inspiration and expiration.
Hints:-
2. Human respiratory system is given. The labels given are not the Ribs Diaphragm Vol. of Lungs
specified parts. Copy and correct the diagram. Inspiration
Expiration
9. A normal man respires in a minute:
a. 10-15 times b. 70-75 times
c. 12-16 times d. 20-24 times
10. a) What is normal respiratory rate?
b) Name an instrument used for measuring volume of air.
c) Mention its clinical significance. (2)(Model 2020)

11. Complete the table:

Pulmonary Definition Volume
volumes
3. It is well known that alveoli are the structural and functional ......................... Air inspired or expired .................
unit of lungs and the centres of gas exchange. Using the given during a normal breathing.
terms, construct a flow chart showing the directions of movement Inspiratory Air inspired forcibly .................
of air from the external environment to alveoli. Reserve Volume
(Trachea, alveoli, bronchioles, nasal cavity, bronchi, glottis, ........................ Air expired forcibly 1000 ml
nostrils, larynx) Residual Volume .................................. 1200 ml
4. Fill the blanks in the given table.
Collective Path of air Functions 12. Observe the graph and mark tidal volume and residual
name volume with an adequate difference between them?
Nostrils i. Transports air to alveoli
ii. .........(c)..........
Nasopharynx iii. Humidifies and brings air to
body temperature.
Conducting ...........(a).......
part
Bronchi

Bronchioles

Exchange part ...........(b)........ ..............(d)........

5. In human beings, the sound is produced by-
a. Pharynx b. Larynx
c. Trachea d. Bronchi (1)(Model 2020) (2) (Model 2017)
13. Pick out the wrong one and justify your selection.
MECHANISM a) VC = ERV + IRV + TV
6. a. Observe the diagrams A and B, mention the events taking b) TLC = VC + RV
place. c) TV = 500 ml
d) ERV = 3000 ml (2)(March 2013)
14. Match the following:
A B
a. Inspiratory capacity i. ERV + TV + IRV
b. Vital capacity ii. RV + ERV + TV + IRV
c. Functional Residual iii. TV + ERV
capacity
d. Expiratory Capacity iv. ERV + RV
A B e. Total Lung Capacity v. TV + IRV
b. Mention the role of diaphragm and inter-costal muscles in
the above process.
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171
15. Expand the following terms- (1)(Model 2021) a. Identify the partial pressure of oxygen where 50% of saturation
a. TV b. RV of Hb with oxygen. (½)
16. Distinguish between the following terms: b. Identify the pO2 where 90% haemoglobin saturation occurs (½)
a. IRV and ERV c. Mention any 3 factors favourable for the formation of
b. Tidal volume and Residual volume. (2)(2020) oxyhaemoglobin in alveoli. (Dec 2020, Imp 2018)
c. Vital capacity and Total lung capacity (2)(2019) (1½)(March & Oct. 2011)
d. Inspiratory capacity and Expiratory capacity.(2)(2018) 1. Identify the graph. (1)(2022)
17. In a normal person expiratory reserve volume and residual
volume were found to be 1000 ml and 1100 ml respectively.
a. Find out his functional residual capacity. (1)
b. How the functional residual capacity differ from the vital
capacity? (1)(Sept. 2010)
18. In a 400 metre race competition, Athira won the first place.
Her friends commented that it is due to her high vital capacity.
a. What do you understand by the term vital capacity?
b. Suggest the ways to improve the vital capacity.
(2)(March 2010)
EXCHANGE OF GASES
24.
19.

Using the above information, prepare a schematic diagram showing

the exchange of respiratory gases at the alveolus and the body tissues.
20. Observe the diagram and answer the following questions:

a. What is represented by the above graph?

O2 CO2 b. What is its significance? (3)(2021)
c. Write any 3 factors which can influence the sigmoid curve of
this graph.
(1½)(July 2017, March 2016, NCERT)
a) Name the biological process involved in the gas exchange TRANSPORT OF GASES
shown in the figure 25. ‘About 97% of O2 is transported by RBCs in the blood’.
b) How the O2 is transported to cells from the alveoli? a. In what form is O2 carried in the blood?
(2)(Oct. 2013) b. What happens to this form when the blood reaches the tissues?
21. Observe the figure and answer the questions. c. What are the factors that influence this process?

26. “In the tissues, the conditions are favourable for dissociation
of O2 from the haemoglobin”. Write any 4 favourable conditions
in the tissues for the dissociation of O2 from oxyhaemoglobin.
(2)(Model 2018)
27. CO2 transport in the form of bicarbonate ion is picturized
below.
Observe the diagram and identify the enzyme noted as “A”.

a) What is the partial pressure of O2 in the alveolar capillary?

b) What happens when partial pressure of O2 becomes same in
the alveoli and alveolar capillary? (2)(Sept. 2012)
22. List the major factors affecting the dissociation of O 2 from
oxyhaemoglobin in the tissues. (2)(Imp 2019)
23. Observe the graph.
80
% saturation of Hb with O2

70
60
50
40 (1) (March 2016)
30 28. Blood transports CO2 from tissues to lungs by various means.
20 Mention any 2 methods of the same.
10 (2)(March 2014)
10 20 30 40 50 60 70 80
Partial pressure of O2 (mmHg)
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29. What does A denote in the given equation?
A
CO2 + H2O H2CO3
a. Lipase
b. Lactase
c. Carbonic anhydrase (1)(Dec 2020)

30. Prepare an equation for a chemical reaction using the

following components.
Carbonic anhydrase, carbonic acid, water, CO2
(2)(Sept. 2012)
31. Diagrammatic representation of CO2 transport in man is
given. Observe and answer the following.

a) Name the method of CO2 transport indicated as A.

b) Write the name of enzyme involved in the process A.
c) How much of CO2 is transported in 100ml of blood?
(2) (Sept. 2016)
REGULATIONS
2. Name the different respiratory centres situated in brain.
Explain their role in maintaining and moderating the
respiratory rhythm. (2)(2022)

32. Correct the following misconceptions of a student regarding

human respiration.
a. Vital capacity includes tidal volume, residual volume and dead
air.
b. Respiration is controlled by nerve centres located in
hypothalamus and cerebrum. (2) (Sept. 2015)

33. Identify the 2 true statements from the statements given below
and rewrite the 2 false statements correctly.
a) Pneumonia is a chronic disorder due to cigarette smoking.
b) CO2 combines with hemoglobin to form carbamino
hemoglobin.
c) Respiratory rhythm is maintained by the respiratory centre in
the heart
d) Alveoli are the primary sites of exchange of gases.
(3)(March 2012)
34. “Human being have a significant ability to maintain and
moderate the respiratory rhythm to suit the demands of the body
tissues”. Justify the statement. (NCERT)

DISORDERS
35. Symptoms of different respiratory disorders are given. Name
the disorder.
a. Difficulty in breathing causing wheezing due to inflammation of
bronchi and bronchioles.
b. A chronic disorder in which alveolar walls are damaged due to
respiratory surface is decreased. (1)(2021)
c. Fibrosis of upper part of lungs due to exposure of silica and
asbestos dust in the mining industry.
36. Asthma and emphysema are two disorders of the human
respiratory system. Mention their causes and symptoms.
(2)(March 2015)
37. “Smoking is injurious to health”. Why?

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Grade: XI Chapter 18: BODY FLUIDS & CIRCULATION
Previous Year’s HSE Questions-TOPIC WISE
CIRCULATORY PATHWAYS 8. Fill the blanks suitably.
1. In a laboratory session your Biology teacher exhibited blood WBC
smears (slides) of cockroach and human beings under
microscope.
…….(A)……. Agranulocyte
How will you distinguish them based on the nature of plasma and
blood cells? (2) (Sept. 2015)
Neutrophil Eosinophil …(B)… …(C).. …(D).,.
2. Observe the diagram A and B.
Destroy .(E).. Inflammatory Destroy …..(F)…
germs response germs
(3)(Model 2018)
9. a) Identify WBCs marked as a1, b1, c1 and d1. (2)
Capillaries
Sinuses

A B b) What is the normal percentage of the WBC marked as b1? (½)

a. Identify the type of circulation shown in the figure A and B. c) Categorise the above WBCs into granulocytes and
b. Write the differences between A and B. agranulocytes.
c. Give one example for each (March 2009) d) Which among the above cells least possibly found when you
observe a drop of blood? (½)
3. The following diagram shows the heart of different classes of e) Write one function of any two types. (1)
chordates. Identify them. (Oct. 2013, Sept. 2010)
10. Classify the following terms under two suitable headings.
Neutrophils, Monocytes, Eosinophiles, Lymphocytes
(2)(Imp 2018)
11. Find the odd one and write the function.
Neutrophil, Erythrocyte, Monocyte,
A B C D Lymphocyte, Basophil, Eosinophil (1) (March 2015)

BLOOD VASCULAR SYSTEM 12. Which is the largest and smallest WBC?
4. Plasma without clotting factor is called ……… 13. Match the following (2) (Oct. 2011)
(1)(Imp 2019) A B
5. Plasma contains 90-92% water, protein contributes 7%, i. Basophil - Phagocytosis
0.9% inorganic constituents, 0.1% glucose and a small quantity of ii. Lymphocyte - Inflammatory reaction
other organic substance. iii. Neutrophil - Associated with allergic reaction
a. Name the important types of protein present in plasma and mention
their functions. (NCERT) iv. Eosinophil - Secrete antibodies
b. What is serum? - Helps in blood coagulation
- Oxygen transport
6. a) Fill up A, B, C, D and complete the branching chart given 14. Match the terms in column A with those in column B and C.
below.
Blood A B C
Neutrophil 2-3% Immune response
Eosinophil 20-25% Phagocytic
Plasma …..(A)…..
Lymphocyte 60-65% Allergic reaction
(3)(March 2018)
RBC ……(B)…. Platelets 15. The blood test report of a patient is given below:
RBC 5.5 million/mm3
Neutrophil 65%
Granulocytes ……(C)…. Monocyte 5%
Basophil 1%
Eosinophil 15%
Neutrophil ……(D)…. Basophil Lymphocyte 23%
Platelet 250000 /mm3
Lymphocyte Monocyte a. Which constituent of his blood is abnormal?
b) Write the function of platelets. (3) (Sept. 2016) b. What is the normal function of that constituent? (2)(March 2010)

7. The normal level of Hb per 100ml of blood is ……………..

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184
1. Match the following: (2)(2022) HEART
Blood cells Function 24. Longitudinal section of the human heart showing internal
(a) Neutrophils (i) Transport of respiratory gases structure is given below. Observe the diagram and answer the
(b) Basophils (ii) Immune responses of body following questions.
(c) Eosinophils (iii) Secrete histamine
(d) Lymphocytes (iv) Allergic reactions
(v) Phagocytic destruction of foreign
organisms
16. Identify the wrong statement and rewrite in correct form.
a. ‘O’ group is known as universal recipient
b. AB group blood has no antibodies.
c. Blood normally contains 150000 to 350000 platelets /mm3
d. Open circulation is present in arthropods and molluscs.
(1)(Oct. 2011)
17. Copy and complete the table and answer the following
questions.
a) Label the part marked as A, B and C.
Antigen Antibody b) Draw a flow chart to show double circulation.
Blood Group
on RBC in Plasma OR
A ……… ……… “Sinoatrial Node is called pacemaker of our heart”
B ……… ……… a) Justify the statement.
AB ……… ………
b) Define cardiac cycle and cardiac output. (3) (March 2016)
O ……… ………
a. Identify the ‘universal donor’ and ‘universal recipient’ from the 25. Observe the diagram and label A, B, C and D
table. (2)(Model 2021)
b. What is Rh factor? In which animal was it first discovered?
c. Name the disorder caused by Rh+ and Rh- incompatibility
during pregnancy. (2)(Model 2020)
d. Write the symtoms of the foetus born in this condition.
e. Above mentioned disorder can be controlled. How?
18. a) Person with ‘AB’ blood group is called ‘universal
recepient’. Give a reason. (2)(Model 2021, 2019)
19. A person with A-ve blood group is injured severely in an
accident. His relatives with A+ve and B-ve blood groups were ready
to donate blood for him. Infer the consequences if he receives
blood from them. (1) (March 2013)
20. Match Column I with Column II:
Column I Column II (2) (March 2017)
(a) Eosinophils (i) Coagulation 26. “All veins carry deoxygenated blood and all arteries carry
(b) RBC (ii) Universal Recipient oxygenated blood”. Do you agree this statement.
(c) AB Group (iii) Resist Infections
(d) Platelets (iv) Contraction of Heart 27. Name the two types of heart valves and mention their
(e) Systole (v) Gas transport (NCERT) functions. (3)(Sept. 2015)
21. Correct the flow diagram on blood clotting. 28. Complete the table.
Prothrombinase Blood vessels of heart Function
Fibrinogen Pulmonary artery ………..
Prothrombin Fibrin Superior vena cava ………..
Aorta ………..
Thromboplastin Pulmonary vein ………..
2+
Ca Thrombin
29. Due to developmental abnormality the wall of the left ventricle
Network (Clot) of an infant’s heart has the same thickness as that of right
22. Blood coagulation is a mechanism to prevent the excessive ventricle. What would be its specific effect on circulation of
loss of blood. blood? (1)(Oct. 2013)
(a) Identify the enzyme help the conversion of inactive fibrinogen OR
(b) Mention the role of thrombokinase “The wall of left ventricle is thicker than other chambers”. Why?
(c) Which ion is necessary for blood clotting? (3)(Imp 2019)
23. Blood donation day is observed in your school on 14th June. 30. SA node has the key role in the rhythmic contractile activity of
Prepare 3 posters with slogans, showing the importance of blood human heart. Give reason. (July 2017)
donation. OR
Hints- Sino-atrial node is called the pacemaker of our heart. Why?
Donate blood, save life (NCERT)

Blood donation is the best donation in human life

Donate blood in every 6 months. It saves a person’s life

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185
31. Observe the flowchart and answer the questions given: 39. Diagrammatic representation of double circulation is given
below.
SA node
↓ A
AV node
↓
Ventricle contracts
↓
AV bundle B
↓
Auricle contracts
a. Redraw the flowchart correctly.
b. What will happen if the SA node is not working properly?
(2)(March 2015, 2010)
32. Given below are the events in the cardiac cycle. Arrange them
in correct order. a. Identify the circulations A and B from the diagram
a. Blood enters arteries b. Which circulation is called greater circulation?
b. Ventricle contracts c. Mention the purpose of circulation A and B.
c. Atria contracts d. Why circulation is human considering as double circulation?
d. Ventricle relax
40. Starting from the left atrium, put the following in the correct
e. Blood enters ventricle
order for circulation of blood.
f. Semi-lunar valves close
a. Left atrium b. Vena cava c. Aorta
g. Tricuspid and bicuspid valves close.
d. Lungs e. Pulmonary artery f. Right atrium
33. Cardiac cycle in a normal person will be completed in 0.8 g. Pulmonary vein h. Right ventricle i. Left ventricle
seconds. j. Bicuspid valve k. Tricuspid valve l. Semilunar valve
a. How much time would an auricular systole, ventricular systole and
a diastole takes in a cardiac cycle? 41. (a) Make a flowchart showing cardiac impulse conduction
b. Define stroke volume. using appropriate terms given in bracket. (2)(Imp 2019)
c. The stroke volume of a normal person is 70ml/ beat. Find out his [SAN, Right atrium, AVN, AV Bundle
cardiac output. Bundle of His, Ventricle]
(Hint: Cardiac output= stroke volume x No. of beats per minute)
(b) Which part known as pacemaker?
34. Stethoscope is an instrument which is used to detect the
sounds of the heart. 42. SAN and AVN are the 2 nodal tissues seen on the heart.
a. Mention the two sounds of the heart. (1) Discuss how these nodal tissues regulated the contractile
b. Give the causes of heart sound. (1) (March 2012) (NCERT) activity of heart. (3)(Dec 2020)

35. (a) Name the tissue marked A & B. 43. Complete the following table.

(1)(2021)

A
44. Intestine Liver

a. Identify the type of portal circulation

b. Name the vein-A
c. Mention the importance of circulation between these two
(b) Among these, which one is referred to as pacemaker and organs
why? (2)(2021, Sept. 2012) d. Identify a similar type of circulation present in our body.
36. The sequential events in the heart which are cyclically LYMPHATIC SYSTEM
repeated are called the cardiac cycle. 45. “Lymph is formed from blood and it returns back to blood”.
a. What are the phases of the cardiac cycle? Mention the functions of lymph.
b. Why do we call the human heart as myogenic? (NCERT) OR
c. What is the role of SAN (Sinu Atrial Node) on a human heart? List out the functions of lymph. (2)(Dec 2020)
(1+1+1=3) (Aug. 2014)
37. Answer the following in a few words.
a. Significance of pulmonary circulation in man.
b. Function of erythrocytes.
c. Pacemaker for a human heart and its significance.
d. Normal blood pressure of human beings and its variation
during hypertension. (4) (March 2014)

38. Make a diagrammatic sketch of human double circulation.

Label the three associated organs and any one blood vessel.
(3)(Sept. 2015)
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186
 ECG
46. Diagrammatic representation of a standard ECG is given
below.
a. Distinguish between Electrocardiogram and Electrocardiograph.

b. What does it denote? Label PQRST in the graph.

c. What does P-wave, QRS complex and T-wave indicates?
d. Mention the clinical use of ECG.
(3) (2020, 2019, Sept. 2016, March 2013)
47. (a) What is ECG ?
(b) Draw a standard ECG and explain the different waves in it.
(3)(2021)
2. Graphical representation of electrical activity of the heart
while it is working is given. (3)(2022)

Write down the different activities of the heart represented by the

peaks from ‘P’ to ‘T’.

48. Select the correct statement regarding with ECG of man

i) P-wave represents auricular repolarisation
ii) P-wave represents ventricular repolarisation
iii) P-wave represents auricular depolarisation
iv) P-wave represents ventricular depolarisation (1) (March 2017)

REGULATION
49. Which are the regulatory mechanisms that increase the
cardiac output?

50. What is the influence of parasympathetic nerves in cardiac

activity?
DISORDERS
51. The blood pressure of a person is shown as 170/130 mm Hg.
What would be his disease? How it affects his body?
(1)(July 2017, Sept. 2012)
52. A rise in blood cholesterol may lead to a deposition of
cholesterol on the walls of blood vessels. This causes the arteries to
lose their elasticity and get stiffened. This is called …………….
a. atherosclerosis b. hypertension
c. hypotension d. systolic pressure
OR
What is the reason for CAD?

53. Result of a project study related to the circulatory disorders in

an area is given below.

a. What is your observation? (½)

b. Name any one circulatory disorder and its characteristics. (1½)
c. Suggest two measures to avoid these disorders.
(1) (March 2011)

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187
Grade – XI Chapter 19 : EXCRETORY PRODUCTS & THEIR ELIMINATION
Previous Year’s HSE Questions-TOPIC WISE

EXCRETORY SYSTEM KIDNEY

1. ‘Based on the chemical nature of the excretory products, 10. Copy the diagram and label the numbered parts.
3 kinds of excretion can be recognised among animals. Do you
agree with this statement? Why?
OR
A pigeon, a tadpole and a cat were fed protein food.
a. In which different forms would they excrete this nitrogenous waste?
b. Why do they excrete so differently?

2. Identify the word pair relation and fill in the blanks.

Fish : Ammonotelic :: Cockroach : ............... (1/2)(March 2018)

3. Ammonia produced during protein catabolism is converted to (2)(March 2009)

uric acid in the liver of 11. Study the diagram.
a. Ureotelic animals b. ammonotelic animals
c. uricotelic animals d. ornithinotelic animals

4. Uricotelism is more advantageous than ureotelism and

ammonotelism in strictly terrestrial animals on the basis of water
conservation in the body. Justify. (2) (Sept. 2016)

5. Classify the following animals on the basis of the mode of

nitrogenous waste excretion in the table given below. a. Identify the parts A, B, C, D, E and F from the diagram.
(2)(Model 2021, 2019, 2010) b. What do you mean by columns of Bertini? (NCERT)
Mammals, Birds, Bony fishes, Reptiles c. Name the structural and functional unit of Kidney.
Terrestrial amphibians, Aquatic amphibians 12. a) Prepare a flow chart of filtrate flow in the nephrons using
Ammonotelic Ureotelic Uricotelic the following terms.
Collecting ducts, PCT, ascending limb of Henle’s loop,
descending limb of Henle’s loop, Bowman’s capsule.
1. By selecting appropriate terms from the bracket complete (2)(2021)
the given table which is related with excretory system. b) Counter current system plays an important role in concentrating
(Urea, Mammals, Uricotelic, Bony fish, Ammonotelic, Uric acid, urine. Name any two regions inside the kidney, where the counter
Snails) current system is seen. (1)(Oct 2011)
Types of excretion Nitrogeneous waste Example 13. What is vasa recta?
___ A ___ Ammonia ___ E ___ 14. Observe the figure given below and answer the questions.
Ureotelic ___ C ___ ___ F ___
___ B ___ ___ D ___ Birds
(3)(2022)
6. Prepare 2 matching pairs from the given list of animals and
excretory organs. (2) (March 2017)
Animals Excretory organs
a. Prawn i) Nephridia
b. Cockroach ii) Antennal gland
c. Earthworm iii) Flame cells a. Write the name of the figure.
b. Name the labelled part (A) and (B).
iv) Kidneys
c. Which is the site of formation of ultrafiltrate?
7. Identify the odd one and write the common features of the other (2)(March 2015, July 2017)
items. 15. A diagrammatic representation of a nephron is given.
Nephridia, Malpighian tubules, Spicules, Kidney, Flame cells
(1)(Sept. 2012)
8. In an informal discussion in your class, your friend made a
comment that “Malpighian tubules are the kidneys of a
cockroach.” How will you evaluate this statement?
(1)(March 2010)
9. Terrestrial animals are either ureotelic or uricotelic not
ammonotelic. Evaluate the statement. (2) (Sept. 2015) (NCERT)
a. Identify the parts labeled as X and Y and write their functions.
b. Which part/parts of a nephron constitute the Malpighian body?
(2)(Aug. 2014, 2010)
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196
 URINE FORMATION 25. Vasopressin stimulates reabsorption of water and reduction
16. A symbolic diagram showing mechanism of urine formation of urine secretion. Hence vasopressin is otherwise called
is given below. Name the process numbered as 1, 2 and 3 in the urine a. Synovial fluid b. nuerotransmitter
formation. c. Anti diuretic hormone d. growth regulating substance

26. “The functioning of human kidney is efficiently monitored and

regulated by hormonal actions of hypothalamus, pituitary, JGA
and to a certain extend by heart”.
a) Do you agree with this statement?
b) Justify your answer with suitable reasons.
(2) (Model 2018, March 2016)
27. Explain the autoregulatory mechanism of GFR. (NCERT)

28. The output of urine increases in cold days while decreases in

hot and sunny days. Can you give a reason for this phenomenon
as realised from the graph given below?

17. Complete each of the following sentences using appropriate

ADH Level
words.
a. Ascending limb of Henle’s loop is ........................... to water
whereas the descending limb is .......................... to water.
b. An excessive loss of fluid from the body stimulates the
hypothalamus to release ..................... hormones from the
.............................. . (2)(March 2012)
200C 300C 400C
18. a) Write the significance of reabsorption in urine formation. Atmospheric temperature
b) Of the following substances, which one is absorbed by active (3)(March 2014)
transport? 29. Analyze the graph
Glucose, nitrogen waste, Water (1)(Model 2018)
blood plasma (picogram/ ml)

60
19. Though nitrogenous wastes are toxic to the body, they are
Vasopressin hormone in

50
absorbed by blood capillaries from the tubules in small quantity.
Why? 40

20. How the counter current mechanism helps to maintain the 30

concentration gradient in the medullary interstitium? 20
(2) (Dec 2020, Sept. 2012) (NCERT) 10
21. In a biology class related to excretion in the human body, a
student gave an opinion that in every minute about 2% of the 5 10 15 20
total blood volume of the body is converted to GFR whereas only % fall in blood volume
1% of this GFR is eliminated as urine. Evaluate this opinion and a. What is the relationship between the amounts of vasopressin in
substantiate your answer. (2) (March 2013) blood plasma and the blood volume? (1)
22. a) Expand GFR. b. Suggest a situation in which the vasopressin decreases in the blood.
b) Even though GFR in a healthy person is 180 l per day, the (1)(Sept. 2010)
amount of urine released per day is only about 1.5 liters. 30. On a hot day would you expect your level of ADH in blood to
Give the reason. (2)(March 2018, NCERT) be high or low? Explain. (2) (Sept. 2012)

REGULATION 31. Observe the schematic diagram showing the mechanism for
23. Diagrammatic representation of a Juxta Glomerular regulating blood volume.
Apparatus (JGA) is given below.

a. Fill the gap in the diagram. (½)

b. Illustrate how blood volume is regulated by this system. (1 ½)
a. What is Juxta Glomerular Apparatus? (Oct. 2013)
b. Name the enzyme secreted by the Juxta Glomerular cells.
c. What is the significance of JGA in kidney function? (NCERT)

24. “RAAS is associating excretory system with circulatory

system”. Comment on this statement.

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32. Complete the flow chart showing the regulation of kidney 41. Copy and complete the table
functioning by Juxta Glomerular Apparatus and adrenal Characteristics Abnormality
cortex. (2)(2020) Presence of ketone bodies in the urine ....................
................................................................ Glycosuria
Fall in GFR
Presence of urea in the urine ...................
Activate JG cells
42. A patient approaches a doctor having symptoms like excretion
Releases ……a…… of large amount of urine, excessive thirst and dehydration.
a. Identify the disease.
Angiotensinogen b. Which hormone deficiency causes this disease?

………b…… 43. a) Give one word for the following: (2)(2019)

Angiotensin II …..c…… Adrenal cortex i. Presence of Glucose in urine

ii. Presence of ketone bodies in urine
….d….. GFR
b) Which human disorder is having the above mentioned 2
33. Complete the representation by filing a, b, c and d. symptoms?

44. Find out the suitable term from the box for the disorders
stated. (2)(2020)
(a) Accumulation of urea in blood.
(b) Insoluble mass of crystallised salts in the kidney
(c) Surgical method for the correction of renal failures.
(d) Inflammation of glomeruli of kidney.

45. Some conditions related to kidney disease are given below.

* Accumulation of urea in blood.
* Malfunctioning of Kidney
(2)(2021)
a. Name the condition.
34. ANF act as a check on RAAS mechanism.
b. In your opinion, suggest the treatments for kidney failure
a. What is ANF? Which part of the body secrete ANF?
and acute kidney failure. (2)(Imp 2018)
b. Write its function. (Model 2020, 2013)
46. A patient is suffering from kidney failure. Suggest a way to
35. In human kidney, Angiotensinogen is converted into
keep him active till the kidney transplantation and briefly explain
Angiotensin I by ………….. (1)(Dec 2020)
the principle behind it.
36. State whether the following statements are true or false. If
47. The steps involved in the treatment of a uremic patient is given
false, correct it. (2)(Imp 2019)
below.
a. ADH prevents diuresis.
b. ANF causes the increase of blood pressure Blood drained from a convenient artery
c. Angiotensin-I activate adrenal cortex to release
aldosterone. ..a… is added to drained blood
d. Aldosterone causes the reabsorption of Na+ and water
from the distal part of renal tubule. Blood is pumped to a dialysing unit

37. Explain micturition. (NCERT) …b… is added to clean blood

38. Indicate whether the following statements are true or false: Cleaned blood is pumped back to the body through a vein
a. Micturition is carried out by a reflex.
b. ADH helps in water elimination, making the urine hypotonic. a) Complete the missing steps (a) and (b)
c. Protein-free fluid is filtered from blood plasma into the b) Diagnose the treatment
Bowman’s capsule. c) Name the organ which is under failure
d. Henle’s loop plays an important role in concentrating the urine.
e. Glucose is actively reabsorbed in the PCT. (3)(NCERT) 48. “We should select a close relative of kidney patient for kidney
transplantaion”. Why? (2)
39. Distinguish between:
a. Rennin and Renin 49. Match the items of column I with those of column II.
b. Malphigian body and malphigian tubules. Column I Column II
c. Diabetes mellitus and Diabetes insipidus a. Ammonotelism I Birds
b. Bowman’s capsule II Water
DISORDERS reabsorption
40. Symptoms of different disorders of the excretory system is c. Micturition III Bonyfishes
given below. Name the disorder. d. Uricotelism IV Urinary bladder
a. Stones or insoluble mass of crystallised salts formed within the e. ADH V Renal tubule
kidney. (2) (NCERT)
b. Inflammation of glomeruli of kidney.
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50. Fill in the gaps:
(a) Ascending limb of Henle’s loop is _______ to water whereas
the descending limb is _______ to it.
(b) Reabsorption of water from distal parts of the tubules is
facilitated by hormone _______.
(c) Dialysis fluid contain all the constituents as in plasma except
_______.
(d) A healthy adult human excretes (on an average) _______ gm
of urea/day. (NCERT)
51. Teacher asks one of the students to name the excretory organs
in man. He names 3 organs beside kidney. Teacher appreciates
him for the correct answer.
a. What was his answer?
b. Give the excretory role of the above organs. (NCERT)

BIOLOGY Instant Notes-for HSS LiVE.IN, by: Minhad. M. Muhiyudeen, #- 9846 29 22 27 199
 Grade – XI Chapter 20 : LOCOMOTION & MOVEMENT
Previous Year’s HSE Questions-TOPIC WISE

MOVEMENTS 10. The parts of a typical cell is given in column A. Write the
1. Distinguish between locomotion and movement with examples. corresponding names of the muscle cell in column B
A B
2. “Movement and locomotion are indispensible for all the vital 1. Cell membrane i. ………….
activities among animals.”
a. Name the 4 basic types of movements in animals. 2. Cytoplasm ii. ………….
b. Why are movement and locomotion necessary among animals? 3. Endoplasmic reticulum iii. ………….
4. Mitochondria iv. Sarcosome
3. Cells of human body perform different types of movement.
Write any 2 types of movement and the parts that exhibit the 11. Observe the diagrammatic representation of a myofibril and
movement. (1)(2020) label A to D.

4. What are the locomotory organs in-

a. Macrophages b. Paramecium
c. Sperm d. Man

MUSCULAR SYSTEM
5. Complete the schematic diagram.
Muscular Tissue

a. Name the structural and functional unit of muscle fibre.

Skeletal Muscle …….b……. …….d…… b. What happens to actin filaments during muscle contraction?
eg …..a……. eg…..c…….. eg : Heart (NCERT)
(2)(Dec 2020) 12. Observe the figure given below.
6. Facts related to two types of tissues are given below. Arrange
them in 2 columns by giving suitable headings. Mention the
location of each tissue in the human body.
 A sheath of tough connective tissue
 Striations absent
 Bundled together in a parallel fashion
 Fusiform shape
 Involuntary in function
 Striated appearance (4)(March 2012)
(a) Identify figure ‘A’ and ‘B’.
7. Complete the table (b) Name the subunit of ‘A’ and ‘B’ (2)(2019)
Skeletal muscle Visceral muscle ……..a……..
Striations present ………b……… ……..c……... 13. Identify the diagram.
…….d……. ………e……… Involuntary
In the walls of hollow
…….f……. ……...g……..
visceral organs

8. Muscles are seen all over the human body. We can move our
a. Label the parts A, B and C.
hand and legs as we wish. But we can’t move the muscles of
b. Mention the role of A.
stomach and intestine as we wish. Give reason
c. Name the contractile protein which shows ATPase activity.
9. Observe the following figure. No need to redraw the diagram. 14. Complete the following chart showing structure of myosin
filament and its protein based on the hints given in the bracket.
(Light meromyosin, Actin, Tropomyosin, Meromyosin)
Thick myosin filament

Protein – Myosin

……A……

a. Label the parts A and B (1)

Heavy meromyosin ……..B…….
b. Write the function of B (1)(March 2011)
ATP binding Actin binding

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 site site (2) (March 2017) (2)(March 2011)

15. The muscle band that remains unchanged during contraction 25. “A contracted muscle becomes shorter and thicker but its
and relaxation of skeletal is volume remains the same”. (2) (March 2016)
a. I b. H c. A d. Z line a) Which theory explains the process of muscle contraction?
b) Identify 2 contractile proteins seen in muscle.
16. Name the portion of the myofibril between two successive
Z-line.
26. “Mechanism of muscle contraction is best explained by the
a. H-zone b. Sarcomere
sliding filament theory, which states that contraction of a muscle
c. I-band d. M-line (1)(2020)
fibre take place by the sliding of the thin filaments over the thich
filaments”
17. The region between two successive Z-line in a myofibril is
a. Prepare a flow chart showing the biochemical events in the
a. sarcomere b. sarcosome
mechanism of muscle contraction. (NCERT)
c. fascia d. anisotropic band 2+
b. Mention the role of Ca and ATP in muscle contraction.
18. In the thin filament of skeletal muscle fibre, a small globular Hint:-
protein, that masks the active sites on the F-actin is Action potential Neuromuscular junction Neurotransmitter
a. G-actin b. actin c. Tropomyosin d. Troponin
Troponin exposes Release Ca2+ Sarcoplasmic reticulum
19. Select the wrong statement regarding muscles from those
given below and correct it. (2)(Imp 2018)
Active sites of actin ATP hydrolysis
a. Each muscle fibre is lined by the plasma membrane called
sarcolemma.
b. The light bands are called ‘A’ band or Anisotropic band. Cross bridge pulls actin filaments Myosin cross bridge formation
c. The portion of the myofibril between two successive ‘Z’
lines is called a sarcomere. Muscle contraction
d. Muscle contain a red coloured oxygen storing pigment is 27. Match the following correctly in the case of muscle
called myoglobin. contraction.

20. Write true or false. If false change the statement so that it is 1. H-zone i. Come closer
true. 2. I-band ii. Reduces
(a) Actin is present in thin filament 3. A-band iii. Disappears
(b) H-zone of striated muscle fibre represents both thick and thin 4. Z-line iv. Remain same
filaments.
(c) Myocin proteins are present in the I-band 28. Based on the diagram given below, can you write down the
(d) There are 11 pairs of ribs in man. structural changes occurring in sarcomeres during muscular
(e) Sternum is present on the ventral side of the body. (NCERT) contraction? (Hint: Any two changes)
21. How does the increased level of Ca2+ in the sarcoplasm help
in muscle contraction? (2)(Model 2018)

22. Major steps involved in muscle contration are given below,

which are not in the correct order. Arrange them in the
correct order. (2)(Imp 2019)

a. Remove the mask of active sites for binding myosin

b. A signal sent out by CNS

c. Binding of Ca+ with troponin (2) (Sept. 2015)

29. The sequence of events leading to muscle fatigue is shown
d. Release of a neurotransmitter substance below. Complete the missing steps. (1) (August 2009)

e. Release of into the sarcoplasm. Repeated activation of muscles

23. Draw a flow chart, showing the physiological processes Anaerobic breakdown of …..(a)…….
involved in the formation of cross bridges during muscle
contraction. (2)(2021, Sept 2012) Accumulation of …….(b)…….

24. Observe the structural representation of the muscle given Fatigue

below:
30. Red muscle fibres have greater capacity to do work for a
prolonged period, whereas white muscle fibres suffer from fatigue
after a short work. Evaluate the statement. (2) (March 2015)

31. Muscle fibres are two types- Red fibre and white fibre.
(a) Name the red coloured pigment in muscle fibre.
(b) Elucidate the major difference between red fibre and white
a. Which among this represents the contracted state? (½) fibre. (2)(Dec 2020)
b. Name the parts labeled as A, B and C. (1 ½)(March 2013)
1. Enlist 3 differences between Red muscle fibre and White muscle
c. Repeated activation of the muscle can lead to fatigue. Justify.
fibres. (3)(2022)
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32. Rahim and John are two athletes in your school. Rahim is a 39. Vertebral column showing the different types of vertebrae is
sprinter, while John is a long distance runner. As a student of given below.
Zoology, state the major differences in the physiological and the
structural aspects between these two.
Hint: Sprinter requires rapid and fast movement.
Long distance runner requires slow but prolonged movement.

SKELETON SYSTEM
33. The axial skeleton contains 80 bones. Make a table according
to where it is seen and number of bones present in each section.

34.

a. Identify the vertebrae A, B, C, D and E.

b. Name the first vertebra of mammals
c. Write the total number of vertebrae in an adult man.

40. Observe the diagram of ribs and rib cage.

Copy the diagram of human skull. The labels are not correct.
Correct them.
a. Identify the structure A.
35. Where is hyoid bone present in our body? b. How many pairs of ribs present in man?
c. Differentiate between true, false and floating ribs.
36. Observe the organization chart given below and fill d. Name the parts of skeletal system involved in the formation of
appropriately. No need to redraw the chart. rib cage.
Ear ossicle: 3 pairs
41. The name of different bones, seen in forelimb and
hindlimb are given below. Arrange them in two columns.
Skull: 23 bones
(Humerus, Tibia, Carpals, Fibula) (2)(2021)
Vertebral Column: ...(b)…

42. In your practical class, teacher brought a tray containing the

following human bones.
Axial skeletons: …..(a)….. Humerus, Patella, Carpals, Ulna, Radius, Tibia, Tarsals, Femur
a. Categorize them into two (1)
b. Give the criteria of your categorization. (1)(Oct. 2013)

….(c)……: 12 pairs of bones Sternum: …..(d)….. Hint:-

Bones of forelimb Bones of hind limb
(2)(March 2010)

37. In an informal discussion, your friend made a comment that

“Skeletal system helps in hearing”. How will you evaluate this 43. Observe the diagram showing the pectoral girdle and bones of
statement? for limb.

38. Name of the bones of appendicular skeleton are given

below: (2)(Imp 2019)

Clavicle
Humerus
Tibia
Patella
Scapula

(a) Select the bones of pectoral girdle

(b) Name the articulating cavity between femur and pelvic
girdle.

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 a. Identify the bones A to E from the diagram 50. Diagram of a joint is given below:
b. Mention the role of pectoral girdle and pelvic girdle in human
body.
c. Name the 3 bones which involved in the formation of coxal
bones of pelvic girdle.
d. Where do you find glenoid cavity and acetabulum?
e. How may bones are present in each forelimb?

44. Select the bones of the leg from the given list of bones:
Humerus, Tibia, Radius, Femur,
Tarsals, Ulna, Fibula, Carpels (2)(March 2018) a. Identify the joint. (½)
b. Name three major structural forms of joints. (1½)(March 2012)
45. Observe the diagram carefully.
51. What is the type of movable joint present between the atlas
and axis?
a. Pivot b. Saddle
c. Hinge d. Gliding (1)

52. Match the following:

Type of joints Examples
i. Ball and socket a) Joints of skull bone
ii. Pivot joint b) Between carpels and metacarpels
of the thumb
iii. Saddle joint c) Between humerus and pectoral
girdle
iv. Gliding joint d) Between atlas and axis
e) Between the carpels
(2)(Sept. 2010)
a. Identify the diagram. 53. Give two examples for each of the following:
b. 4 parts in the diagram are labelled incorrectly. Correct them. a. Synovial joints
b. Muscular proteins (2) (Model 2021, March 2014)
46. Name of few bones of appendicular skeleton is given below.
Clavicle 54. Joints between adjacent vertebrae allow only very little
Humerus movement.
Tibia (a) Give reason.
Patella (b) Name the joint between 2 adjacent vertebrae.
Scapula
a) Select the bones of pectoral girdle. 55. An athlete met an accident on the ground. His thigh born
b) Name the articulating cavity between femur (thigh bone) and slipped off from the girdle.
pelvic girdle. (2) (Sept. 2016) a. Write the name of the above mentioned girdle.
b. Identify the type of joint that slipped off.
47. The longest bone of the human body is c. Name the disorder caused due to the accumulation of uric acid
a. humerus b. tibia c. vertebra d. femur crystals in such a joint. (2)(July 2017)
48. Fill in the blank spaces: DISORDERS
(a) All mammals (except a few) have __________ cervical vertebra. 56. Joints are essential for all types of movements involving the
(b) The number of phalanges in each limb of human is __________ bony parts of the body.
(c) Thin filament of myofibril contains 2 ‘F’ actins and two other a. Write any three major types of joints in our body. (1½)
proteins namely __________ and __________. b. Name the disease caused by the accumulation of uric acid crystals
(d) In a muscle fibre Ca2+ is stored in __________ in joints. (½) (Oct. 2011)
(e) __________ and __________ pairs of ribs are called floating ribs.
(f) The human cranium is made of __________ bones. (NCERT) 57. The important findings in the case sheet of two patients A and
B show that both are suffering from disorders of the skeletal
JOINTS system.
49. Joints are the place of articulation between two or more bones a. Patient A is suffering from inflammation of joints due to the
or between a bone and a cartilage. Identify the types of joints in accumulation of uric acid crystals.
the diagram A, B and C given below. b. Patient B shows decreased bone mass and decreased level of
oestrogen.
Identify the disorders or diseases of A and B. (2)(Aug. 2014)

58. Certain disorders and their causes are given. Match them
suitably.
A B C
 Myasthenia  Inflammation of joints
gravis  Auto-immune disorder
 Tetany  Low calcium ions in body
fluid
 Muscular  Genetic disorder
dystrophy
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 (2)(Model 2018)

OR
Symptoms of different muscular and skeletal disorders are given.
Fill the gaps.
Symptoms Disorder
……………………a…………………… Tetany
An autoimmune disorder affecting
neuromuscular junction leading to fatigue, ……b……
weakening and paralysis of skeletal muscle.
Muscular
…………………….c……………………. dystrophy
A type of rheumatism characterized by
inflammation of joints, pain and stiffness of …….d…...
joints.

59. Identify the disorders based on the symptoms given below.

a. Inflammation of Joints.
b. Decreased bone mass and increased chance of fracture.
c. Inflammation of joints due to the accumulation of uric acid
crystals.
d. Rapid spasms in muscle due to low Ca+ in body fluids.
(2)(Imp 2018)

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 Grade- XI Chapter 21 : NEURAL CONTROL & COORDINATION
Previous Year’s HSE Questions-TOPIC WISE
NEURON 1. Diagramatic representation of impulse through an axon is
1. From the given diagram, find out the following parts. given. (2)(2022)
a. Node of Ranvier b. Cell body
c. Schwann cells d. Nissl’s granules
e. Synaptic knob f. Axon (Model 2020)
g. Myelin sheath h. Axon terminal
i. Dendrites j. Nucleus

Explain how an action potential develops.

6. Distinguish between the following: (2)(Imp 2019)
a. Electric synapse and Chemical synapse
b. Rods and cones
7. Two types of synapses are given in the diagram A and B.

2. ‘Neural tissue is formed of neurons and neuroglia cells’.

a. Name the important properties of neural tissues.
b. State the function of neuroglial cells.
a. Identify A and B
c. Name the basic unit of neural system.
b. Impulse transmission in ‘B’ is faster than that of ‘A’. Give reason.
d. Name the parts of neuron.
c. Name the chemical substance that helps in the transmission of
i. That carries impulse towards the cell body.
impulses in ‘A’. (Model 2018, Say- 2011)
ii. That transfer the impulse away from cell body.
iii. Part which protects axon. 8. Study the diagram.
3. The diagram shows different types of neurons.

Figure a & b given above are two axon terminals with synapse.
a. Identify the neurons A, B and C giving reason.
Which one is conducting the impulse? Justify your answer.
b. Where do you find these type of nuerons in human body?
(2) (Sept. 2010)
NERVE IMPULSE 9. Arrange the following processes in nerve impulse conduction
4. The polarity of a resting neuron is given in this picture. in a sequential order.
a. Bursting of synaptic vesicle
+ + + + + + + + + + + b. Development of action potential
- - - - - - - - - - - c. Na+ - K+ pump starts functioning
d. Stimulus received and influx of Na+ ions
- - - - - - - - - - - e. Binding of neurotransmitter with post synaptic membrane
+ + + + + + + + + + +
f. Maintenance of resting potential (3) (July 2017, March 2013)
a. Name the mechanism by which polarity is maintained
b. What happens when input reaches the axon? 10. Flowchart showing impulse transmission through chemical
c. Why inner surface is negatively charged? (Model- 2013) synapse is given below. Complete it. (2)
Impulse arrives at a) …………………………… terminal
↓
5. Nerve impulse transmission involves- b) ……………………………………
* Maintenance of resting potential. ↓
* Development of action potential. Fusion of synaptic vesicles with plasma membrane
* Propagation of action potential. ↓
c) …………………………………….
a. Diagramatically represent the polarised and depolarised state of
↓
axon of a neuron. Released neurotransmitters bind to receptor on post
b. Describe how the resting potential of a neuron is maintained. synaptic membrane
c. “Electrical current fade as they pass along a wire but nerve ↓
impulse does not fade as they pass along neuron”. Evaluate this d) ……………………….…………….
statement and substantiate your answer. (SAY-2013) ↓
Generation of new potential at post synaptic neuron
(July 2017, March-2011)
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 16. Mention the functions of the following structures in human
HUMAN NEURAL SYSTEM body. (Hint: Any two each)
11. Complete the flow chart showing human neural system. a. Hypothalamus
Neural System
(2)(March 2018) b. Axon (2)(Sept. 2015)
17. Name the following: (1)(2021)
(a) Structure which connects two cerebral hemispheres.
….a…. Peripheral neural system
(b) Four rounded swellings in midbrain.
18. The region of the brain, which control the functions such
Brain …..b…. Autonomic ….c… as body temparature, urges for eating and drinking-
neural system a. Hypothalamus b. Cerebrum
c. Associated area d. Thalamus (1)(Dec 2020)
….d…. ….e…. 1. While playing cricket, the ball hits a boy’s head. He
immediatly vomited and felt difficulty in breathing.
12. a) Complete the given table (parts of human brain) a. Identify the part of brain affected.
Fore brain Hind brain b. Give the functions of the affected part.
Parts Parts
19. Which part of the brain control respiration and gastric
i) Cerebrum i) Pons
secretions?
ii) Thalamus ii) .................. a. Cerebrum b. Cerebellum
iii) .................. iii) Medulla c. Medulla d. Hypothalamus (1)(Imp 2019)
b) Which one of the above parts of the brain that controls gastric
secretions? (2) (Sept. 2016) 20. Study the diagram of human brain and answer the following:

13. Answer the following:

a) Cerebral hemispheres of human brain are connected by
..................
i. Association area ii. Corpus callosum
iii. Corpora quadrigemina iv. Pons varoli
b) Observe the diagram and label 1, 2, 3 and 4.

a. “Brain is the most protected organ in our body”. Justify the

statement.
b. Name the parts of the brain which function as endocrine glands.
c. Identify the parts of brain involved in the formation of ‘brain
stem’.
d. Name the parts of brain-
(3) (March 2017, 2014) i. Often called as ‘relay centre’
14. Complete the schematic diagram. ii. Control body temperature.
Brain iii. Connect two cerebral hemispheres together.
iv. Maintain the posture and equilibrium of the body.
v. Control cardiovascular reflexes.
Fore brain Mid Brain
HindBrain REFLEX ACTION
…..a…. ….e…. 21. You may have an experience of sudden withdrawal of body
….b….. …..d… ….f…. parts when you come in contact with objects that are extremely
…..c…. Medulla cold. This response occurs involuntarily without conscious efforts.
(3)(Dec 2020, 2019, Imp 2018) a) Name the process behind this.
15. Analyse the concept may given below and fill the gaps b) Construct a flow chart showing the pathway of impulses during
appropriately so as to explain the concept of brain. this process. (2) (March 2010)
Brain 22. Following is a schematic representation of an action.
Receptor ..........?............
Fore Brain ......a...... ......b......
Interneuron in the
spinal cord
Hypo Corpora Pons Medulla Cerebe
Cerebrum
thalamus Quadrigemina oblangata llum ..........?...........
Efferent
Thalamus pathway
Functions a. Complete the schematic representation and identify it.
Functions
b. Give an example of such an action (3)(March- 2012)
Functions
 Control
respiration 23. a) Prepare a pathway of an action by using the following hint.
 .......c........  visual reflex  .........e........... [Hint: Receptor, Motor neuron, Afferent neuron, Efferent
 .......d........  auditory reflex  .........f........... neuron, Interneuron in the spinal cord, Effector organ]
b) Give an example of such an action. (3)(2021, March 2015)
(Say- 2012, March 2010)

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 SENSE ORGANS a) Rod cell only b) Cone cells only
24. The lens and cornea are not having blood supply. So the c) both rods and cones d) rods and cones are absent
nutrients are supplied by- (1) (Sept. 2016)
a. Retina b. blind spot 33. Given below are the stages in the generation of optic nerve
c. Vitreous body d. aqueous humour impulse or action potential on the retina and the role of opsin and
retinal in the mechanism of vision. Arrange them in a correct
25. Redraw the diagram. Name and label the parts indicated order.
below. a. Action potential (impulses) are transmitted by the optic nerves to
the visual cortex area of the brain.
b. Light induces dissociation of retinal from opsin.
c. Generates action potential in the ganglion cells through bipolar
cells.
d. Structural changes in the opsin which induce membrane
permeability changes.
e. Potential differences are generated in the photoreceptor cells.
f. Neural impulses are analyzed by the visual cortex area of the
brain. (3) (Aug. 2014)

a) Identify the photoreceptor cells present in human eye. 34. Give reasons for the following statements.
(3) (Model 2018, March 2016) a) Impulses travels faster in the central nervous system than the
26. Observe the diagram: (2)(2020) peripheral nervous system.
b) Paralysed persons do not show a reflex action.
c) Deficiency of vitamin A leads to night blindness
d) The blind spot is devoid of vision whereas fovea is the area of
sharpest vision.
e) Cleaning the ear with sharp objects is harmful. (3) (March 2009)

35. Diagrammatic view of human ear is given below:

F
a. Name the parts A & B E
b. Write the characteristics features of ‘C’
c. Arrange the given parts of eye in the sequence that light D
travels from the external environment into the eye.
(Vitreous chamber, lens, cornea, C
retina, aqueous chamber)
B
1. Observe the flow diagram of the pathway of a light ray G
entering the eye. A
Vitreous chamber → Lens → Cornea → Retina → Brain a. Identify the parts A, B, C, D, E, F and G from the diagram.
→ Aqueous chamber → Pupil → Optic nerve Mention the functions at the part marked A and B.
b. Which part of the ear functions for maintaining body balance?
27. Which one is not associated with structure of eye? c. Give the technical names of auditory ossicles in their natural
[Cornea, Choroid, Cochlea, Iris] (1)(Model 2021) sequence. What role do they play in hearing?
d. Name the fluid in which membraneous labyrinth of the inner
28. The innermost layer of the eyeball is ……………… ear floats.
a. Choroid b. Iris
c. Retina d. Sclera (1)(March 2018) 36. Incus, stapes and malleus are the 3 ear ossicles of the middle
ear. Arrange them in the order in which they are present from
29. Analyze the table and fill in the blanks given in the table with tympanic membrane to the oval window of the cochlea. Explain
appropriate words. their function. (1) (Sept. 2010)
RODS ………………. 37. Where do you find the following structures in human body?
No ability to detect colour ………………. a. Cochlea b. Neurotransmitters (1)(Sept. 2015)
…………………….. Cone pigments
…………………….. Cone shaped 38. Arrange the following words in sequential order according to
Only one type ………………. transmission of sound waves. (2)(Model 2021)
……………………. Photopic vision
Ear drum → Basilar membrane → Ear ossicles → Oval
(3) (March 2007)
window → Perilymph → Organ of Corti → Pinna → Tectorial
30. Compare rods and cones of the retina based on the following
features. membrane → Endolymph → Auditory canal → Auditory
i) Shape ii) Type iii) Ability to detect colour nerve → Brain
iv) Pigments v) Vision (3) (March 2015)
39. ‘Ear is the stato-acoustic receptor’.
31. Retina of the eye contains 3 layers of cells- photoreceptor cell, a. A deaf person can maintain his equilibrium. Do you agree? Justify
bipolar cell and ganglion cell. Arrange these cells from the inside your answer.
to outside. (1) (March 2011) b. How will hearing be affected if the eustachian tube is blocked?

32. Fovea of retina in eye contains ..................

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2. The following is the pathway of sound waves in the process
of hearing. Fill in the blanks with appropriate terms given in
the box. (2)(2022)
Basilar membrane Ear Ossicles
Tympanum Utricle Tectorial membrane

Pinna  Auditory canal  ___ A ___  ___ B ___ 

Oval window  Fluid of cochlea ___ C ___  Hair cells  __
D ____  Auditory nerves  Brain

40. a. Identify the diagram.

b. Name the parts A, B, C and D.

B
A
41. Identify the type of receptors for the following stimulus:
a. Receptor for sense of smell
b. Receptor for sense of taste.
c. Name the bean shaped structure associated with the limbic
system of brain sense the smell. (2)(Dec 2020)

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 Grade – XI Chapter 22 : CHEMICAL COORDINATION & INTEGRATION
Previous Year’s HSE Questions-TOPIC WISE

ENDOCRINE SYSTEM 6. Answer the following:

1. Define the following: a. Name the bony cavity in which the pituitary gland is located.
(a) Exocrine gland (b) Endocrine gland (c) Hormone b. List any 3 hormones produced from the pituitary gland.
(NCERT) (2)(Dec 2020)
2. Identify the endocrine glands from the given diagram. 7. Expand the following hormones:
a. TSH b. ACTH
c. ANF d. FSH (1)(Imp 2019)

8. Classify the given hormones in the table.

Prolactin, Oxytocin, Leutinising hormone, Vasopressin
Released from Released from
Adenohypophysis Neurohypophysis

(2)(Model 2018)
9. You have heard about the injection given to the pregnant
women before delivery.
a. Name the injection (hormone)
b. Is this hormone secreted in human body?
3. Select the odd one out of the following. Justify your answer.
Thyroid, Thymus, Pituitary gland, Salivary gland 10. A patient approaches a doctor having symptoms like excretion
of large amount of urine, excessive thirst and dehydration.
4. The diagrammatic representation of pituitary and it’s a. Identify the disease.
relationship with hypothalamus is given below. b. Which hormone deficiency causes this disease?
c. Name the organ which secretes that hormone.
d. Name the target organ of that hormone.

11. During the early age of a person, there is failure of secretion of

growth hormone. What will happen?

12. Observe the diagram.

a. List the hormones of anterior pituitary gland and mention

their function.
b. Name the hormones secreted by the posterior pituitary gland.
What function does each serve? Where are these hormones
actually produced?
c. Name the portal system present in the diagram. a. Identify the endocrine glands A and B.
d. Which part of the pituitary gland is under the direct the neural b. Name the hormones secreted by A and B
regulation of the hypothalamus? c. Mention the role of A and B in the regulation of blood calcium
e. Name the hormone secreted by pars intermedia of pituitary level.
gland. 13. The symptoms are swelling in the thyroid gland, bulging of
eyeball, quick heart beat, high metabolic rate, increased body
5. Identify the picture and label the parts A, B, C and D. temperature and restlessness etc. What would be the disorder in
this person?
14. Find the odd one out in each group and justify.
a. TSH, ACTH, FSH, LH, ADH
b. Cretinism, Myxoedema, Exophthalmic goitre, Addison’s disease.
c. Dwarfism, Acromegaly, Tetany, Gigantism.

15. After diagnosing the blood of a foetus, a doctor comments that

foetus has some immunological diseases and it may be due to the
malfunctioning of an endocrine gland.
a. Name the gland.
b. Which are the hormones produced by this gland?
(Imp. 2019) c. What are the main functions of these hormones?
(2)(March 2010) (March 2012)
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16. Complete the flow chart. 24. Analyze the facts given in three columns find their
Thymus gland relationship and fill the blanks. (2)
Differentiation of
Thymus a) -----------------
……a…. (Hormone) T-lymphocytes
b) --------------- Adrenaline Emergency hormone
Kidney Erythropoietin c) -----------------
Differentiation ……c……
Decrease blood glucose
of T-lymphocytes Pancreas d) ----------------- level
(Oct. 2011), (Aug. 2014), (Sept. 2016)
………b…….. Humoral immunity
25. Corticoids are the hormones secreted by the adrenal cortex.
17. Observe the relationship between the first two terms and fill a. Name the 3 layers of adrenal cortex.
up the blank: b. Give one example for glucocorticoids and mineralocorticoids and
Hyperglycemic hormone: Glucagon mention their functions in our body.
Hypoglycemic hormone: …………………… (1) (Oct. 2013)
26. A boy was trapped in a lift and his heart rate as well as
18. Note the relationship in the first pair and then complete breathing rate increased.
the second pair. (2)(2019) (a) Name the hormone responsible for this.
(b) What is the collective name for these hormones?
a) Insulin : Hypoglycemic hormone :: (c) Which gland produce these hormones?
……………. : Hyperglycemic hormone (d) Where is this gland located? (2)(2021, 2009)
b) Over secretion of growth hormone : Gigantism ::
Low secretion of growth hormone : …………. 27. ‘Adrenal medulla is the centrally located tissues in the
adrenal gland, where as adrenal cortex is located outside.’
19. Like insulin and glucagon, PTH and calcitonin are How does adrenal cortex and medulla differ in their function?
antagonistic in their action in maintaining normal blood calcium (2)(2020)
level. Substantiate this statement. (2) (March 2016) 28. ‘Pancreas is composite gland which act as both exocrine and
endocrine gland’
20. The steroid hormone responsible for the balance of water a. Name the endocrine part of pancreas
and electrolyte in our body is- b. Mention the hormones secreted by -cells and -cells of endocrine
a. Insulin b. Melatonin part of pancreas and write down its functions.
c. Testosterone d. Aldosterone
29. Give reasons for the following:
21. Name: a. Iodised salt may reduce the incidence of simple goitre.
a) Hyperglycemic hormone b. Hyposecretion of insulin causes diabetes mellitus.
b) Birth hormone c. Adrenaline is often called the emergency hormone.
c) Hypercalcemic hormone
d) Milk ejection hormone 30. A person reported to a doctor that he has enhanced thirst,
e) Heterocrine gland of the body increase in the volume of urine and delayed healing of wounds.
f) Largest endocrine gland What would be your opinion that the person is suffering from these
g) Gland which function as biological clock symptoms?
h) Emergency hormone
i) Pregnancy hormone 31. Distinguish between diabetes insipidus and diabetes
j) Infantile gland mellitus. (2)(2022)
k) Gland that differentiate ‘T’ cells.
l) Example for inhibiting hormone. 32. Complete the following sentence using appropriate words.
a. …………….hormone controls the diurnal (24 hour) rhythm. (½)
22. Match column B and C with column A b. Insulin controls ……………..level of blood. (½)(March 2014)
A B C
Thyroid Melatonin Weak immunity 33. Write any two examples for the following.
Pituitary Insulin ANF a. Hormones which control blood-sugar level
Pancreas Thymosin Gigantism b. Hormones which control sexual development (2)(Sept. 2015)
Thymus Growth hormone Diabetes mellitus
Thyroxine Goiter 34. Name the hormones whose deficiency is responsible for the
Progesterone Marasmus following:
(2)(March 2011), (March 2015) a) Dwarfism
23. Match column B and C with column A b) Diabetes mellitus
A B C c) Cretinism
Hormone Endocrine gland Principal function d) Diuresis (2)(March 2018)
a) Contraction of
1. Thyroxin i) Adrenal gland 35. Hormonal abnormality is responsible for certain diseases in
smooth muscles
man. List of some diseases are given below. Write the hormone
2. Oxytocin ii) Thymus gland b) Stimulates ovulation related to each of it.
c) Regulates basal a) Diabetes mellitus
iii) Pituitary gland
metabolic rate b) Gigantism
d) Increases calcium
iv) Thyroid gland c) Diabetes insipidus
level in the blood
d) Cretinism (2) (March 2016)
(2) (Sept. 2012)

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36. A man having no kids for several years consulted an infertility LOCAL HORMONES
specialist. He was then asked to consult an endocrinologist. He 42. “Protein digestion and hormone gastrin are related”. How?
found out that in the particular person, the production of
testosterone is very low. 43. Write the name and functions of the hormone-
a. From where is the testosterone produced? a. Secreted from the atrial walls of our heart
b. Mention the function of testosterone. b. Secreted from juxtaglomerular cells at kidney.

37. Which hormonal deficiency is responsible for the following 44. ANF act as a check on RAAS mechanism.
conditions? a. What is ANF?
(a) Diabetes insipidus b. Write its function. (Model 2013)
(b) Grave’s disease
(c) Cretincism 45. Following are the hormones produced by tissues other than
(d) Diabetes mellitus (2)(2021) endocrine glands. Write the part where it is produced and
mention the functions of each. (3)(Imp 2019)
38. Complete the given table appropriately. (3)(Imp 2018) a. Cholecystokinin
b. Gastrin
Gland Hormones Function c. Secretin
i. Pancreas Glucagon ……a……
46. Fill the table appropriately. (2)
ii. …..b…. Thymosin Immunity Hormones Site of production Function
CCK Gastrointestinal tract a) ………………
iii. Pineal
…..c…… 24 hr diurnal rhythm Erythropoietin b) ………………… RBC formation
gland c) ………… Heart Reduced BP
iv.Pituitary PTH d) ……………… Increased blood Ca2+
Oxytocin …d….
gland
Parathyroid 47. Complete the table.
v. ….e… increases Ca++ level in the blood
homone Endocrine gland Hormone Function
vi. Thyroid TCT ……f……. Heart .........A.........
Decreases blood pressure
Pancreas Insulin ...........B.........
39. Complete the given table appropriately. (3)(2020) .........C........ Erythropoietin
Stimulate erythropoiesis
Thymus ..........D.......
Gives immunity
Gland Hormones Function (2) (March 2017)
…a…. Androgen Development of male MECHANISM OF HORMONE ACTION
accessory sex organ 48. Draw a flow chart on the mechanism of hormone action.
Thymus …..b…. ….c…. Generates cyclic AMP, FSH release, Biochemical response,
Response I, Binds with membrane receptor, Ovarian growth
… d… Glucagon Maintain normal blood
(2)(Sept. 2010)
glucose levels
OR
Pineal ….e…. …f…. Prepare a flow chart showing the mechanism of protein hormone
(e.g., FSH) action.
40. Study the flow chart and answer the following questions:
Ovary Ovarian follicle …….(A)…… 49. What do you mean by ‘secondary messenger’ in hormone
Ovulation Corpus luteum ……(B)……. action? Give examples.

a. Name the hormones A and B secreted by ovarian follicle and 50. The given picture shows the mechanism of a hormone
corpus luteum in female. action.
b. Mention the role of the hormones A and B
c. What is corpus luteum?
d. Name the pituitary hormones which stimulate the development
of ovarian follicles and corpus luteum in females.

1. After ovulation, the ruptured follicle in ovary is converted

to a structure called _____. (1)(2022)

41. Complete the chart showing hormone and hormonal diseases.

Diseases Causes
Dwarfism Low secretion of growth hormone
a) ------------------ Over-secretion of growth hormone
Goiter Deficiency of iodine
Diabetes mellitus b) --------------------------- a. Identify the chemical nature of hormone.
b. Mention some examples of this type of hormones
(1)(Oct. 2013) (March 2009)

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