Control & Coordination: Class 10 Previous Year Questions

Control & Coordination questions asked in CBSE board exams

Repeated questions first. Open the free app to see each question as it appeared in the paper, with its marking scheme.

1. Assertion (A) : Reflex actions do not involve thinking. Reason (R) : Most reflex actions are controlled by the spinal cord.
   Board 20261 markAssertion-Reason
2. Give differences between the following : (a) Nephron and neuron (b) Sensory nerve and motor nerve (c) Consumers and decomposers
   Board 20261 markMCQ
3. (a) “The timing and the amount of hormone secreted by a gland are regulated in the human body.” Justify this statement with the help of an example. 2 OR (b) Electrical impulse is an excellent means to transmit information in the animal body, but there are some…
   Board 20261 markvery short
4. Read the following passage and answer the questions that follow : A middle-aged person is facing some cognitive changes in himself. His early symptoms included mild forgetfulness. For example, forgetting where he left his mobile or failing to find words to com…
   Board 20261 markMCQ
5. (a) Define hormone. (b) “Hormones should be secreted in precise quantities. We have a feedback mechanism through which this is done.” With the help of an example justify the statement.
   Board 20253 marksshort answer
6. Name the parts of hind-brain of the human brain. Which part of the hind-brain controls involuntary actions such as blood pressure and salivation ?
   Board 20252 marksshort answer
7. (i) (a) Distinguish between hormonal co-ordination in plants and animals. (ii) Which part of the brain is responsible for - (1) intelligence (2) riding a bicycle (3) vomiting (4) controlling hunger (ii) How is brain and spinal-cord protected against mechanical…
   Board 20245 markslong answer
8. Define reflex action. With the help of a flow chart show the path of a reflex action such as sneezing.
   Board 20243 marksshort answer
9. (A) How is the movement of leaves of a sensitive plant different from the downward movement of the roots ? OR (B) There is a hormone which regulates carbohydrate, protein and fat metabolism in our body. Name the hormone and the gland which secretes it. Why is …
   Board 20242 marksshort answer
10. H 21 H 35. (a) (i) List three points of difference between nervous and hormonal mechanisms for control and coordination in animals. (ii) How are auxins related with the bending of plant shoot towards unidirectional light ? Explain. 5 OR (b) (i) Name the disord…
    Board 20235 markslong answer
11. (a) Certain specialised cells in animals called stem cells have the ability to divide and differentiate into different cell types. This helps in the replacement of a damaged organ. Name and explain two methods of asexual reproduction that are similar to stem c…
    CBSE practice 2023-245 markslong answer
12. In animals, hormones can be secreted by one organ and can act on multiple organs. Justify this statement by explaining the effect of a single animal hormone on three organs.
    CBSE practice 2023-243 marksshort answer
13. Given below are some disorders noticed in some patients. It could it be due to malfunctioning of which part of brain: a) Loss of sensation of feeling full b) Lowered ability to salivate c) Difficulty in maintaining the posture and balance in body
    CBSE practice 2023-243 marksshort answer
14. How do control and coordination in plants differ from that in animals? Give any FOUR points of difference.
    CBSE practice 2022-232 marksshort answer
15. Rajesh noticed that a potted plant kept in the window of his room shows bending towards sunlight. This could be due to: a) More growth in the well lit region due to diffusion of auxin hormone b) More growth in the region away from light due to diffusion of aux…
    CBSE practice 2023-241 markvery short
16. Students to attempt either option A or B. A. Which parts of the brain perform certain actions for which we do not have any thinking control? What are such actions called, give two examples. OR B. How is the information of touch in the ‘sensitive plant' control…
    Sample paper 2026-271 markvery short
17. How do muscles move at the cellular level and respond when processed messages are received from the brain?
    Sample paper 2026-271 markvery short

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