HOLIDAY ASSIGNMENT (2025) XI TOPIC -UNIT – 1

The living world

1. Each unit of a category of classification is termed as:

a) taxon
b) order
c) cohort
d) trophic level
2. Identify the correct sequence of taxa in Linnaean hierarchy?
a) Class, family, species, genus, order
b) Species, genus, family, order, class
c) Phylum, class, family, species, order
d) Species, genus, phylum, family, class
3. Binomial nomenclature was proposed by
a) Bauhin
b) Linnaeus
c) Huxley
d) De Vries
4. Related genera belong to the same
a) Species
b) Variety
c) Family
d) Breed
5. Match column I with column II and select the correct option
Column I Column II

A Family i Diptera
B Order ii Arthropoda
C Class iii Muscidae
D Phylum iv Insecta

a) A =iv , B = ii, C = i, D = iii

b) A = iii, B = i, C = iv, D = ii
c) A = iii, B = ii, C =iv, D = i
d) A = iv, B = iii, C = ii, D = i
6. Match column I with column II and select the correct option
Column I Column II

A Family i tuberosum
B Kingdom ii Polymoniales
C Order Iii Solanum
D Species Iv Plantae
E Genus v Solanaceae

a) A = v, B = iv , C = ii, D = i, E = iii
b) A =v , B =iii , C = ii, D =iv, E = i
c) A =i , B =v , C =iii , D =iv , E =ii
d) A = iii, B =ii , C = iv, D =i , E =v
7. Match the following and choose the correct combination from the option given
Column I Column II

A Panthera tigris i Housefly

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B Mangifera indica ii Wheat
C Musca domestica iii Mango
D Triticum aestivum iv Tiger

a) A = iv, B = iii, C = i, D = ii
b) A = i, B = ii, C = iii, D = iv
c) A = iv, B = iii, C = ii, D = i
d) A = iv, B = i, C = ii, D = iii

BIOLOGICAL CLASSIFICATION
8. The two kingdom Classification was given by
(a) c.linnaeus
(b) john ray
(c) Huxley
(d) whittaker
9. Which of the following is used in biochemical and genetic work?
(a) Claviceps
(b) Aspergillus
(c) Neurospora
(d) Mucor
10. Which of the following is an indicator of air pollution?
(a) Mycorrhiza
(b) Agaricus
(c) Lichens
(d) Common mushrooms
11. The natural system of Classification is based on
(a) morphology
(b) evolutionary trend
(c) anatomy
(d) all of the above
12. Two organisms of the same class but different families will be kept under the same
(a) genera
(b) species
(c) order
(d) family
13. Bacteria that live in hot springs are called
(a) Halophiles
(b) Thermoacidophiles
(c) Methanogens
(d) None of the above
14. Red tides in sea appear due to
(a) Euglena
(b) Chrysophytes
(c) Dinoflagellates
(d) Diatoms
15. The asexual spores are not found, vegetative reproduction occurs by fragmentation and sexual organs
are absent. Identify the class of fungi.
(a) Phycomycetes
(b) Ascomycetes
(c) Basidiomycetes
(d) Deuteromycetes

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 HOLIDAY ASSIGNMENT (2025) XI TOPIC -UNIT – 1
16. Potato spindle tuber disease is caused by
(a) Phycobionts
(b) Virus
(c) Bacteria
(d) Viroids
17. Choose the correct pair.
(a) Parasitic fungi – feeds on plants and animals
(b) Saprotrophic fungi – feeds on dead and decaying organic matter
(c) Symbiotic fungi – mycorrhiza
(d) All of the above are true
18. Ques11 Match the terms in Column I with the descriptions in Column II.

Column I Column II
A. Eubacteria 1. Trichoderma
B. Dinofalgellates 2. Albugo
C. Phycomycetes 3. Gonyaulax
D. Deuteromycetes 4. Anabaena

(a)A- (1), B- (2), C- (3), D- (4)

(b)A- (2), B- (3), C- (4), D- (1)
(c)A- (4), B- (3), C- (2), D- (1)
(d)A- (4), B- (3), C- (1), D- (2)
19.
Column I Column II
A. Plantae 1. Archaebacteria
B. Fungi 2. Euglenoids
C. Protista 3. Phycomycetes
D. Monera 4. Algae
(a)A- (1), B- (2), C- (3), D- (4)
(b)A- (2), B- (3), C- (4), D- (1)
(c)A- (4), B- (3), C- (2), D- (1)
(d)A- (4), B- (3), C- (1), D- (2)
20.
Column I Column II
A. . Basidiomycetes 1. Agaricus
B. Ascomycetes 2. Albugo
C. Phycomycetes 3. Trichoderma
D. Deuteromycetes 4. Saccharomyces
(a)A- (1), B- (4), C- (2), D- (3)
(b)A- (2), B- (3), C- (4), D- (1)
(c)A- (4), B- (3), C- (2), D- (1)
(d)A- (4), B- (3), C- (1), D- (2)
21. Identify the following parts of a given virus

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22. Identify the following parts of a dividing bacterium

23. Choose the correct match.

(a) Photosynthetic autotrophs – Nutrient recycling
(b) Chemosynthetic autotrophs – Nitrogen fixation
(c) Heterotrophic bacteria – Production of antibiotics
(d) Mycoplasma – Production of curd

24. Which sentence is true for Bryophytes ?

(a) They are autotrophic
(b) vascular tissues are absent
(c) Fertilisation take place in the presence of water
(d) All of the three
25. Which genetic material is present in virus
a.DNA
b. RNA
c. DNA/RNA
d. none
26. virus that infect animals is
a. either single or double stranded DNA or double stranded RNA
b. either single or double stranded RNA or double stranded DNA
c. single stranded DNA
d. None
27. Protein coat in virus known as
a. capsomeres
b. cap
c. capsid
d. capsid
28. vein clearing is a viral disease seen in
a. animals
b. plants
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c. both
d. None
29. Virioids lack
a. RNA
b. protein coat
c. DNA
d. both peotein and RNA

PLANT KINGDOM
30. A green plant possessing single celled reproductive organs, no vascular tissue and no root, stem or leaf
should be classified as
(a) Algae (c) Bryophytes
(b) Fungi (d) Mycoplasma
31. Gymnosperms resemble angiosperm in having
(a) Cilliated sperms (c) Presence of Ovules
(b) Presence of archegonia (d) Monoxylic wood
32. Modified shoots with highly condensed internodes is
(a) Leaf (c) Microsporophyll
(b) Flower (d) Megasporophyll
33. Pollen tube move down through style
(a) To affect the pollination (c) Because it is positively geotropic
(b) Due to chemical attraction (d) To obtain food from style tissue
34. In which part reduction division takes place in moss plant?
(a) Capsule (c) Operculum
(b) Antheridium (d) Archegonium
35. Gymnosperms produce neither flower nor fruit because they do not possess
(a) Embryo (c) Ovule
(b) Ovary (d) Seed
36. Rhodophyceae is called red algae because of the pigment
(a) Fucoxanthin (c) Carotenoids
(b) Phycoerythrin (d) Chlorophyll c
37. In gymnosperms, the development of pollen grains occurs in
(a) Strobili (c) Megasporangia
(b) Microsporangia (d) Macrosporangia
38. Cycas has an embryo with two cotyledons, yet it is not classified in dicots because
(a) It looks like a palm (c) Its ovule are naked
(b) It has compound leaves (d) It bears megasporophyll
39. In bryophytes and pteridophytes transport of male gamete requires
(a) Wind (c) insects
(b) Birds (d) Water
40. Match the column I with column II and select the correct answer.
Column I Column II
A Chlorophyta 1. Laminarin
B Rhodophyta 2. Starch
C Phaeophyta 3. Floridean starch
D Cycadophyta 4. Glycogen

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(a) A=1, B=2, C=3, D=4
(b) A=2, B=3, C=4, D=1
(c) A=2, B=3, C=1, D=4
(d) A=4, B=3, C=2, D=1
41. Match the column I with column II and select the correct answer.
Column I Column II
A Zygote 1. Haploid
B Nucellus 2. Triploid
C Endosperm 3. Diploid
D Synergids 4. Diploid
(a) A=2, B=1, C=3, D=4
(b) A=1, B=3, C=4, D=3
(c) A=2, B=3, C=1, D=4
(d) A=3, B=4, C=2, D=1
42. Match the column I with column II and select the correct answer.
Column I Column II
A Selaginella 1. Gymnosperm
B Spirullina 2. Pteridophyte
C Sphagnum 3. Bryophyte
D Cycas 4. Algae
(e) A=2, B=1, C=3, D=4
(f) A=1, B=3, C=4, D=3
(g) A=2, B=3, C=1, D=4
(h) A=2, B=4, C=3, D=1
Assertion reason type questions
Given questions have two statements, Assertion and Reason. Answer the questions using the code
given below:
(A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(B) If both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
(C) If Assertion is true but Reason is false
(D) If Assertion is false but Reason is true

43. Assertion: The adult gametophyte in moss is green and photosynethic.

Reason: the mosses like liverworts do not show alternation of generation
44. Assertion: Asexual reproduction produces large number of genetically similar
plants irrespective of heterogenecity.
Reason: Asexual reproduction is of great help to the plant breeding programmes.
45. Assertion: In monocarpic plants, flowering take place once in a life cycle.
Reason: Monocarpic plants do not survive after flowering.
46. Which of the following statement is wrong?
(a) Algin and carragen are products of algae.
(b) Agar-agar is obtained from Gelidium and Glacilaria
(c) Chlorella and Spirulina are used as space food.
(d) Mannitol is stored food in Rhodophyceae.
47. Select the correct statement:
(a) Gymnosperm are both homosporus and heterosporus.
(b) Salvinia, Ginkgo and Pinus are all gymnosperm
(c) Sequoia is one of the tallest trees.

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(d) The leaves of gymnosperms are not well adapted to extremes of climate.
48. Name the chief pigment in cyanobacteria
(a) Chlorophyll b (c) Chlorophyll a
(b) Fucoxanthin (d) r-pycoerythrin
49. Cyanobacteria floats on surface of water due to
(a) Presence of nucleus (c) Presence of food vacuole
(b) Presence of gas vacuole (d) Presence of golgi bodies
50. Two phycobilins found in phytoplanktons are
(a) Chlorophyll a and b
(b) Phycoerthyrin and Phycocyanine
(c) Phycoerthyrin and Fucoxanthin
(d) Phycocyanine and Xanthophyll
51. Deep beneath the sea algae found is
(a) Brown algae (c) Diatoms
(b) Green algae (d) Red algae
52. Growth of phytoplanktons leads
(a) Decrease in BOD (c) No Change
(b) Increase in BOD (d) All of these
53. Identify ‘A’ in give figure

A
(a) Gemma cup (b) Archegonia
(c) Anthredium (d) None of these

ANIMAL KINGDOM
54. When any plane passing through the central axis of the body divides the organism into two identical
halves, the organism is called ___________.
(a) radially symmetrical
(b) bilaterally symmetrical
(c) asymmetrical
(d) metamerically segmented
55. Which of the following is not the common fundamental feature for animal classification?
(a) Germinal layers.
(b) Pathway of water transport.
(c) Pattern of organization of cells.
(d) Serial repetition of the segments.
56. Animals like annelids, arthropods, etc. where the body can be divided into identical left and right
halves in only one plane, exhibit___________symmetry.
(a) radial (b) bilateral
(c) asymmetrical (d) non- symmetrical

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57. Which of the following is a fresh water sponge?
(a) Sycon (b) Euspongia
(c) Spongilla (d) Pleurobrachia
58. Few cnidarians like corals have a skeleton composed of
(a) calcium hydroxide (b) calcium sulphate
(c) calcium carbonate (d) sodium bicarbonat
59. Which of the following statements (i – v) are incorrect?
(i) Parapodia are lateral appendages in arthropods used for swimming.
(ii) Radula in molluscs are structures involved in excretion.
(iii) Aschelminthes are dioecious.
(iv) Echinoderm adults show radial symmetry.
(v) Ctenophorans are diploblastic.
(a) (i) and (ii) (b) (i) and (iii)
(c) (i), (iv) and (v) (d) (iii) and (v)
60. Which of the following statements (i – v) are incorrect ?
(i) Circulatory system in arthropods is of closed type.
(ii) Parapodia in annelids helps in swimming.
(iii) Phylum mollusca is the second largest animal phylum.
(iv) Aschelminthes are dioecious.
(a) (i) only (b) (iii) only
(c) (i) and (iii)
(d) (iii) and (iv)
61. Which of the following statements (i - v) are correct ?
(i) The pelvic fins of female sharks bear claspers.
(ii) In Obelia, polyps produce medusae sexually and medusae form the polyps asexually.
(iii) Flame cells in platyhelminthes help in osmoregulation and excretion.
(iv) In non-chordates, central nervous system is ventral, solid and double.
(v) Pinnae are present in mammals.
(a) (ii), (iv) and (v) (b) (i), (iii) and (v)
(c) (iii), (iv) and (v) (d) (i), (ii) and (iii)
62. Which one of the following statement regarding coelom of given animals is correct?
(a) Round worms (aschelminthes) are pseudocoelomates.
(b) Molluscs are acoelomates.
(c) Insects are pseudocoelomates.
(d) Flatworms (platyhelminthes) are coelomates.
63. Match the types of animals given in column I with their examples given in column II and choose the
correct option.
Column -I Column -II
(Types of animals) (Examples)
A. Limbless reptiles I. Elephant
B. Jawless vertebrates II. Lamprey
C. Flightless bird III. Ichthyophis
D. Largest terrestrial animal IV. Ostrich
E. Limbless amphibia V. Cobra
(a) A – II; B – V; C – IV; D – I; E – III

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 HOLIDAY ASSIGNMENT (2025) XI TOPIC -UNIT – 1
(b) A – V; B – II; C – IV; D – I; E – III
(c) A – V; B – II; C – I; D – IV; E – III
(d) A – V; B – IV; C – II; D – I; E – III
64. Identify the figures and select the correct option.

(a) A - Pseudocoelomate; B - Coelomate, C-Acoelomate

(b) A - Coelomate, B - Pseudocoelomate, C- Acoelomate
(c) A - Coelomate; B- Acoelomate; C - Pseudocoelomate
(d) A - Coelomate; B- Acoelomate; C-Eucoelomate
Assertion reason type questions
Given questions have two statements, Assertion and Reason. Answer the questions using the code given
below:
(A)Both Assertion and Reason are true and Reson is the correct explanation of Assertion.
(B) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(C) Assertion is true but reason is false
(D) Both Assertion and Reason are false.
(e) Assertion is false but reason is true.

65. A = Coclenterata have central gastro – vascular cavity with a single opening mouth on hypos-tome.
R = Cnidarians exhibit two basic body forms called polyp and Medusa.
66. A = Fertilisation is internal and development may be direct or indirect in round worm.
R = Females are longer than males.
67. A = Heart is three chambered in cartilaginous fishes.
R = One auricle and two ventricle.

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 HOLIDAY ASSIGNMENT (2025) XI TOPIC -UNIT – 1
ANSWER SHEET

NAME OF STUDENT-------------- ----------------------------CLASS--------- SECTION--------

Q AN Q AN Q A Q AN Q AN Q AN
1. 13. 25. 37. 49. 61.
2. 14. 26. 38. 50. 62.
3. 15. 27. 39. 51. 63.
4. 16. 28. 40. 52. 64.
5. 17. 29. 41. 53. 65.
6. 18. 30. 42. 54. 66.
7. 19. 31. 43. 55. 67.
8. 20. 32. 44. 56. 68.
9. 21. 33. 45. 57. 69.
10. 22. 34. 46. 58. 70.
11. 23. 35. 47. 59. 71.
12. 24. 36. 48. 60. 72.

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