BYJU'S ICSE Class 10 Biology Previous Year Question Paper
The LeanyRDp
2017
Biology
Science Paper 3
(Two hours)
General Instructions: Total Marks: 80
Answers to this paper must be written on the paper provided separately.
You will not be allowed to write during the first 15 minutes.
This time is to be spent in reading the question paper.
The time given at the head of the paper is the time allowed for writing the
answers.
Attempt all questions from Section I and any four questions from Section II.
The intended marks of questions or parts of questions are given in
brackets [].
SECTION I (40 Marks)
Attempt all questions from this Section
Question 1
(a) Name the following: (5)
(1) The process by which root hairs absorb water from the soil. Endosmosis
(i) The organ which produces urea. ivet
(ii) The kind of lens required to correct Myopia. Con c a v e Lens
(iv) The pituitary hormone which stimulates contraction of uterus during child
birth. *yto can
x (v) The international health organisation which educates people in accident
prevention.Red Cvss
(b) Choose the correct answer from each of the four options given below: [5]
(i) The prime source of chlorofluorocarbons is:
A. Vehicular emissions
B. Industrial effluents
C. Domestic sewage
D.Befrigeration equipments
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BYJU's
(i) Penicillin obtained from a fungus is:
AAntibiotic
B. Antiseptic
C. Antibody
D.Antiserum
(iii) Marine fish when placed in tap water bursts because of:
AEndosmosis
B. Exosmosis
C. Diffusion
D. Plasmolysis
(iv) Surgical method of sterilisation in a woman involves cutting and tying of:
A. Ureteer
B. Uterus
C. Urethra
DOviduct
(v) Synthesis phase in the cell cycle is called so, because of the synthesis of
more:
A. RNA
B. RNA and proteins
CONAA
D. Glucose
(c) The statements given below are
incorrect. Rewrite the correct
statement by
changing the underlined words of the statements.
(i) The Graafian follicle, after ovulation turns into (5)
a hormone producing issue
called Corpus callosum. CcPu lateum
(i) Deafness is causal due to the
rupturing of the Pinnaa.
(ii) Gyri and Sulci are the folds of
Cerebellum. eavcdumTymanum
(iv) Free movement of solutes in and out of the Cevebrum
cell takes place across the
membrane. Cellwall cell
(v) The solvent used to dissolve the
chlorophyll pigments while testing a leaf
for starch is
Sodalime.mathylated
spirt
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BYJU'S
The Leerning AC
correct order in a
Rewrite the terms in
ven below are sets of five terms each.
(a
logical sequence. Oesophagus.
Mouth, Small intestine,
Example: Large intestine, Stomach,
intestine Large
Answer Mouth^Oesophagus Stomach Small
intestine. 4
(6 Fibrnogen, Thrombin.
() Fibrin, Platetets, Thromboplastin, (3
(i) Cochtea, Malteus, Pinna, Stápes, Intus, 2
(5 Motor Sensory neuron.
neuron,
(ii) Receptor, Spinal tórd, Effectór, io
O. Gestatibn, Implantation.
2 Parturitón, Fertiliaation,
(iv) Uterus,
2 Green leaves.
(v) Caterpillar, Snake, Owt, Frog,
the
out of the following terms given and name
Choose the ODD one
(e) [5
CATEGORY to which the
others belong:
Vitreous humour, Iris, Central canal)Rest psesent un Tho eu
(i)
() Aqueous humour,
Rest a e disinhectanl
(ii) Iodine, DDT(Lime)
Formalin, labe o i
hormones aAntertor
FSH Rest aro
(ii) ACTH, TSH,(ADH), Compnents d DNA
Nitrogenous base Rest
arta
Sugar,
(iv) Phosphate,(RNA) natabatic wastes
Ammonia a n e ni tgenos
Kost
(V) ( Bile,)Urea, Uric acid,
the first pair indicates the
terms. In each group
Given below are groups of
() and complete the second pair on
between the two terms. Rewrite
relationship
a similar basis.
Expiration
Inspiration: Carbon dioxide
Example : Oxygen: Nerve2
() Eye Optic nerve: :
EarAuditm
Nucleus: Kou4okne>ts
(i) Cytoplasm: Cytokinesis :
:
ffelen2Hao
(ii) TT: Homozygous: Tt
Amnion: Heart PercicardiUm
(iv) Foetus :
Adenine Thymine: Cytosine:Guanun
(v)
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BYJU'S
9 Match the items given in Column Awith the most appropriate ones
ones in Olumn
in Col
Band rewrite the correct matching pairs.
Column A
Column B
1. Sacculus
-dynamicbody balance
2. Birth rate
Hyperglycemia
3. DNA and
histomes - Hypoglycemia
4. Euro norms
5. Diabetes mellitus
Natality2)
- static body balance(
vehicular standards
-
(A)
nucleosome (
(h) The diagram given below
endocrine gland.
represents the location and structure of an
Study the same and answer the
questions that follow:
[5]
() Name the
endocrine gland shown in the
(ii) Name the secretion diagram. Thy vpid
of the gland which
(ii) Name the mineral regulates basal metabolism.
element required for the
synthesis of the above
ThysDXIe
mentioned hormone. Sodue
(iv) Name the disease caused
due to
hormone in children.
undersecretion of the above
mentioned
Csetinun
(v) Name the disease caused due
to
hormone. hypersecretion of the above
mentioned
Eropthal mic
Goitre
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MARKING SCHEME
Question 2
(a) ) Telophase. Nuclear membrane reappears/ Spindle fibres disappears/ Cytokinesis begins
/Chromatids become thin/ daughter nuclei are formed. (Any one)
(i) 1-Chromosome
2- Nuclear membrane
(ii) Karyokinesis
(iv) Anaphase chvemahol
nloner
Cer iele
Aski
Spinde ti n
Chromosomes moving towards the poles.
One labelling/ Correct No. of Chromosomes.
(v) Meiosis
(b) ) Active Transport -
To absorb mineral ions from soil.
Diffusion To take in carbon dioxide for photosynthesis and oxygen for respiration /
Removal of Water vapour during transpiration/ attract
insects for pollination by spreading fragrance of flowers.
density and
ii) Demography Statistical study of human population with reference
-
to size,
distribution.
Number of individuals per square km at any given time.
Population density -
(ii) Antibiotic - Micro organisms
Antibody- Lymphocytes
Malpighian capsule, Proximal and distal convoluted tubules
(iv) Renal Cortex -
Renal medulla -
Loop Henle, Collecting ducts
(v) NADP- Nicotinamide Adenine Dinucleotide Phosphate
ATP -Adenosine Tri Phosphate
MARKING SCHEME
Question3
(a) (i) Flaccid/ Plasmolysed
Plasma membrane
(ii)
(ii) 1. Cell wall
2. Strong sugar solution
3. Cell membrane
4. Nucleus
water / hypotonic solution
(iv) Keeping the cell in tap
62
Deplasmolysis
vacuole
(Any two)
(v) Cell wall, Chloroplasts, large
(b) i) Noise pollution
Loud conversation, Musical bands,
etc (Any three)
(i) Loudspeaker, Television, Radio,
deafness, irritability, etc. (Any
(ii) Loss of concentration,
disturbs sleep, damage to eardrum,
three)
water or land deteriorates its
constitiuent when added to the
environment / air,
(iv) Any
natural quality.
Biomedical wastes,
domestic wastes, Plastics, Pesticides,
(V) Industrial wastes, Fertilizers,
etc. (Any two)
Question 4
MARKING SCHEME
(a) ) Photosynthesis
i ) tis a process by which plant cells containing ehlorophyll prepare food/ glucose from
CO2 and water using sunlight.
(ii) O2 was used up by the burning candle. Mousedies due to lackof oxygen/asphyxiation.
iv)- Provides food for all organisms
Provides
O for respiration.
() 6CO2 + 12H20Chlorophyl CoHi206 +6H20+ 602
(6) G) Surrounds urethra close to its origin from urinary bladder.
(i) Surrounds the axon of neuron.
(ii) In Pancreas
iv) Inner ear/ Part of the membranous labyrinth
(v) Connects middle ear to throat.
Question 5
(a) i) 1. Scrotum /Scrotal sac
2. Spermduct/ Vas deferens
3. Epididymis
(ii) Seminiferous tubules
(ii) 1.maintains a temperature of 2 to 3° C less than body temperature for the
maturation of spermns.
3. Stores the sperms till they become mature.
(iv) Ley dig cells / Interstitial cells
(V) - A v e s e m
Nutaus
Head Cauknele
- Mitothondr ia
d
pee
Axral prlamnl
aul
(b) (i) Overgrowth of Adrenal Coxtex and more secretion of Cortisones stimulates
development of certain male characteristics.
(ii) Contribute to bringing rain
Provide O; for breathing
Natural homes for wild animals
Can result in soil erosion, droughts, flash floods. (Any two)
(i) - To reduce the surface area exposed to sunlight, number of stomata are reduced.
To prevent excessive transpiration.
(iv) Sweat glands are less active in winter, all the excess water in the body has to be eliminated
as urine by the kidneys.
(v) Left ventricle has to pump blood till our toes and to the head against gravity. So its
walls are thicker. Right ventricle has thinner walls because it pumps blood only upto
the lungs.
MARKING SCHEME
Question 6
(a) i) Ventricles
Tricuspid and Bicuspid valves are open / semilunar valves are closed.
i) 1. Pulmonary artery, Deoxygenated blood.
2. Pulmonary veins, Oxygenated blood.
(ii) LUBB-Closure of Tricuspid and bicuspid valves.
DUP-Closure of semilunar valves
(iv) Coronary arteries
(v)
Avui Ve
COnnachie tiie
Endotali
Difference in the size of lumen and thickness of muscle layer
(Any two labelling).
(b) i) Innate/ Inbom/ Natural
(ii) Recessive
ii) Seminal vesicles
(iv) Potometer
(v) Fraternal
(vi) Homologous chromosomes
(vii)Antiseptic
(vii) Biomedical waste
ix) Lysozyme
(x) RBCs/ Erythrocytes
MARKING SCHEME
Question 7
) Phenotype - All bear axial flowers
(a)
Genotype All are heterozygous dominant for axial flowers.
(i)
A
A AA Aa
Aa aa
ii) Phenotypicratio -3:1
Genotypic ratio-1:2:1
12
iv) Law of Dominance: Out of a pair of contrasting characters, only one is able to express
while the other remains suppressed.
(vi)Colour blindness, Haemophilia, Pattern baldness. (Any two)
(b) )A-Cerebrum
B-Cerebellum
C-Spinal Cord
(ii) A - Seat of memory, intelligence, consciousness, will power, control voluntary actions,
helps us to think, reason, invent, plan (Any one)
B-Maintains body balance, posture, equilibrium, co-ordinates muscular activities (Any
one)
(ii) Neurons/ nerve cells
A-Outer grey matter has cytons and inner white matter has axons.
C-Outer white matter has axons and inner grey matter has cytons.
(iv) Meninges
(v) Protects the brain / spinal cord from injuries and shocks.
