R.S.

JHUNJHUNWALA INTERNATIONAL SCH0OL

VAPI
Academic Session 2025-2026
Date..
Roll N0......
biology worksheet
Max Marks: 147
Total Time: 3 Hrs 00 Mins
General Instructions
all questions are compulsory

Standard/Class: 10th Subject: SCIENCE

Section A

Objective(MCQ) - (1 Marks)
1 The gap between two neurons is called a
(a) dendrite. (b) synapse.
(C) axon. (d) impulse.
2 Which plant tissue transports water and min-erals from the roots to the leaf? [1]
(a) Xylem (b) Phloem
(c) Parenchyma (d) Collenchyma
3. Name the substances whose build up in the muscles during vigorous physical [1]
exercise may cause cramps?
(a) Ethanol + Carbon dioxide + Energy (b) Lactic acid + Energy
(c) Carbon dioxide +Water + Energy (d) Pyruvate
4 The breakdown of pyruvate to give carbon dioxide, water and energy takes place in 1]
(a) cytoplasm. (b) chloroplast.
(c) mitochondria. (d) nucleus.
5 In which mode of nutrition an organism de-rives its food from the body of another
living organism without killing it?
(a) Saprotrophic nutrition (b) Parasitic nutrition
(c) Holozoic nutrition (d) Autotrophic nutition
6 The mode of nutrition found in fungi is: [1]
(a) Parasitic nutrition (b) Holozoic nutrition
(c) Autotrophic nutrition (d) Saprotrophic nutrition
7. amoeba, food is digested in the:
 (a) food vacu ole (b) mitochondria
(c) pseudopodia (d) chloroplast
8 Which of the following events in the mouth cavity will be affected if salivary amylase [1]
is lacking in the saliva?
(a) Starch breaking down into sugars.
(b) Proteins breaking down into amino acids.
(c) Absorption of vitamins.
(d) Fats breaking down into fatty acids and glycerol.
9. Which region of the alimentary canal absorbs the digested food? [1]
(a) Stomach (b) Small intestine
(c) Large intestine (d) Liver
10. The contraction and expansion movement of the wals of the food pipe is called: [1]
(a) translocation (b) transpiration
(c) peristaltic movement (d) digestion
11. When a few drops of iodine solution are added to rice water, the solution turns blue- [1)
black in colour. This indicates that rice water contains:
(a) fats (b)complex proteins (c) starch (d) simple proteins
12. What are the products obtained by anaerobic respiration in plants?
(a) Lactic acid + Energy (b) Carbon dioxide + Water + Energy
(c) Ethanol + Carbon dioxide + Energy (d) Pyruvate
13. Glycolysis process occurs in which part of the cell?
(a) Cytoplasm (b) Nucleus
(c) Mitochondria (d) Chloroplast
14. The autotrophic mode of nutrition requires [1]
(a)carbon dioxide and water. (b) sunlight.
(c) chlorophyll. (d) all of the above.
15. The respiratory pigment in human beings is: [1]
(a) carotene (b) chlorophyl
(c) haemoglobin (d) mitochondria
16. The xylem in plants are responsible for (1]
(a) transport of water. (b) transport of amino acids.
(c) transport of food. (d) transport of oxygen.
17. The movement of food in phloem is called:
+ WPS AI
(a) transpiration (b) translocation
(c) resrespiration (d) evaporation
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18. Name a circulatory fluid in the human body other than blood. [1]
(a) Platelets (b) RBC
(c) Lymph (d) Plasma
19. Where is the dirty blood in our body filtered? [1]
(a) Heart (b) Lungs (c) Ureter (d) Kidneys
20. The kidneys in human beings are a part of the system for
(a) nutrition. (b) excretion.
(c) respiration. (d transportation.
21. The brain is responsible for
(a) thinking. (b) regulating the heart beat.
(c) balancing the body. (d) all of the above.
22. A part of the body which responds to the in-structions sent from nervous system is
called
(a) recreceptor (b) effector
(c) nerves (d) muscles
23. Posture and balance of the body is controlled by
(a) Pons (b) Medulla oblongata
(c) Cerebellu (d) Cerebrum
24. Breathing is controlled by which part of the brain?
(a) Cerebrum
(b) Cerebellum
(c) Hypothalamus
(d) Medulla oblongata
25. Which nerves transmit impulses from the cen-tral nervous system towards muscle [1)
cells?
(a) Sensory nerves (b) Motor nerves
(c) Relay nerves (d) Cranial nerves
26. Which part of nervous system controls the re-flex activities of the body?
(a) Brain (b) Spinal cord
(c) CerCerebrum Cerebellum

Subjective- (1Marks)
27. How are the alveolidesigned to maximise the exchange of gases?
28. Why is diffusion insufficient to meet the oxygen requirements of multicellular [1]
organisms like humans?
 Section B

Subjective - (2 Marks)
29. How are involuntary actions and reflex actions different from each other? (2
30. State the function of: (2]
) gustatory receptors (i) olfactory receptors.
31. Name the glands present in the wall of the stomach that release secretions for (21
digestion of food. Write the three components of secretion that are released by
these glands.
32. Drawa flow chart to show the breakdown of glucose by various pathways. [2)
33. Draw a diagram of human excretory system and label kidneys, ureters on it. (2]
34. (a) Define excretion. (2)
(b) Name the basic filtration unit present in the kidney.
35. Which signals will get disrupted in case of a spinal cord injury? (2)
36. Write the name and functions of any two parts of the human hind-brain. (2]
37. How are the lungs designed in human beings to maximise the area for exchange of (21
gases?

Section C

Subjective- (3 Marks)
38. What are the differences between autotrophic nutrition and heterotrophic nutrition? 3]
39. a) What is the function of digestive enzymes? (3]
b) How is the small intestine designed to absorb digested food?
40. Mentioh three major regions of brain. Write one function of each. (3]
41. (a) State the role played by the following in the process of digestion: (3)
() Enzyme trypsin (i) Enzyme lipase
(b) List two functions of finger-like projections present in the small intestine.
42. (a) What is peristaltic movement? I3]
(b) 'Stomata remain closed in desert plants during daytime'. How do they do
photosynthesis?
43. (a)Why is nutrition necessary for the human body? (3]
(b) What causes movement of food inside the alimentary canal?
44. (a) In the process of respiration,state the function of alveoli. [3]
(b) Rate of breathing in aquatic organisms is much faster than that in terrestrial
organisms. Give reasons.
45. (a) Write two water conducting tissues present in plants. How does water enter [3]
continuously into the root xylem?
(b) Explain why plants have low energy needs as compared to animals.
46. Explain how the translocation of materials in phloem tissue in plants is achieved by [3]
utilising energy.
47. a) What is the role of saliva in the digestion of food? [3]
b) What are the necessary conditions for autotrophic nutrition and what are its by
products?

Section D

Subjective - (5 Marks)
48. Describe the structure and functioning of nephrons. [5]
49. a) What are the differences between the transport of materials in xylem and (5]
phloem?
b) Compare the functioning of alveoli in the lungs and nephrons in the kidneys with
respect to their structure and functioning.
50. (a) Why is small intestine in herbivores longer than in carnivores?
(b) What will happen if mucus isnot secreted by the gastric glands?
51. (a) State the form in which the folowing are stored: [5]
() Unused carbohydrates in plants.
(i) The energy derived from food in humans,
(b) Describe the process of nutrition in Amoeba with the help of diagram.
52. (a) Why is therea difference in the rate of breathing between aquatic organisms and [5]
terrestrial organisms? Explain
(b) Draw a diagram of human respiratory system and label - pharynx, trachea, lungs,
diaphragm and alveolar sac on it.
53. (a) State reasons for the following: [5]
(i) Herbivores need a longer small intestine while carnivores have shorter small
intestine.

() The lungs are designed in human beings to maximise the area for exchange of
gases.
(b) The rate of breathing in aquatic organisms'is much faster than that seen in
terrestrial organisms.
54. Draw a flow chart showing the three different pathways involved in the breakdown of [5]
glucose in different organisms. Name the respiratory pigment present in human
beings. State the function of rings of cartilage present in our throat.
55. (a) Draw a diagram of human respiratory system and label: Trachea, Bronchi and [5]
Diaphragm.
(b) Give reasons for the following:
L Page 5 of 6
 () Lungs always contain residual volume.
(ii) Nostrils are lined with mucus.
56. Give reasons: [5]
(a) Ventricles have thicker muscular walls than atria.
(b) Transport system in plants is slow.
(c) Circulation of blood in aquatic vertebrates differs from that in terrestrial
vertebrates.
(d) During the daytime, water and minerals travel faster through xylem as compared
to the night.
(e) Veins have valves whereas arteries do not.
57. (a) Mention any two components of blood. [5]
(b) Trace the movement of oxygenated blood in the body.
(c) Write the function of valves present in between atria and ventricles.
(d) Write one structural difference between the composition of artery and veins.
58. a) Draw the structure of a neuron and explain its function. (5]
b) How does phototropism ocCur in plants?
59. (a) Define reflex arc. Draw a flow chart showing the sequence of events which occur (5]
during sneezing.
(b) List four plant hormones. Write one function of each.
60. (a) How is brain protected from injury and shock? [5]
(b) Name two main parts of hind brain and state the functions of each.
61. (a) Name the two main constituents of the Central Nervous System in human [5]
beings.
(b) What is the need for a system of control and coordination in human?

Section E

Writing-Grammar
62. The longest fibre on the cell body of a neuron is called [1)
(a) sheath (b) cytoplasm
(c) axon (d) dendrites
 Answers

1.B 2. A 3. B
4. C 5. B 6. D
7.A 8. A 9. B

10. C 11. C 12. C

13. A 14. D 15. C
16. A 17. B 18. C
19. D 20. B 21. D
22. B 23. C 24. D
25. B 26. B 62. C