Control and Coordination

This chapter has

Control and Coordination — solved practice questions

8 Class 10 Science questions with step-by-step solutions. Attempt each, then reveal the answer.

1. Q1easy

   The functional and structural unit of the nervous system is the:

   • Anephron
   • Bneuron
   • Caxon
   • Ddendrite
   Show answer & solution

   Correct answer: (B) neuron

   The neuron (nerve cell) is the basic structural and functional unit of the nervous system.

2. Q2easy

   The junction between two neurons is called a:

   • Aaxon
   • Bdendrite
   • Csynapse
   • Dnode
   Show answer & solution

   Correct answer: (C) synapse

   A synapse is the tiny gap between the axon terminal of one neuron and the dendrite of the next.

3. Q3medium

   Reflex actions are controlled by the:

   • Abrain
   • Bspinal cord
   • Ccerebellum
   • Dmedulla
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   Correct answer: (B) spinal cord

   Reflex arcs pass through the spinal cord, not the brain, allowing fast involuntary responses.

4. Q4medium

   The part of the brain that maintains balance and coordination of movement is the:

   • Acerebrum
   • Bmedulla
   • Ccerebellum
   • Dhypothalamus
   Show answer & solution

   Correct answer: (C) cerebellum

   The cerebellum controls coordination, balance and fine motor movements.

5. Q5easy

   Which gland is called the 'master gland' of the body?

   • Athyroid
   • Bpituitary
   • Cadrenal
   • Dpancreas
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   Correct answer: (B) pituitary

   The pituitary gland controls many other endocrine glands, earning it the title 'master gland'.

6. Q6easy

   Insulin is secreted by the:

   • Athyroid gland
   • Badrenal gland
   • Cpancreas
   • Dpituitary gland
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   Correct answer: (C) pancreas

   Insulin is produced by the beta cells of the islets of Langerhans in the pancreas.

7. Q7medium

   The hormone responsible for the 'fight or flight' response is:

   • Aadrenaline
   • Binsulin
   • Cthyroxin
   • Doestrogen
   Show answer & solution

   Correct answer: (A) adrenaline

   Adrenaline (epinephrine), secreted by the adrenal glands, prepares the body for emergency situations.

8. Q8easy

   Plants growing towards light is called:

   • Ageotropism
   • Bphototropism
   • Cthigmotropism
   • Dchemotropism
   Show answer & solution

   Correct answer: (B) phototropism

   Phototropism — growth movement in plants in response to light (positive phototropism = toward light).

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