Control and Coordination MCQ Quiz

30 questions

1. The structural and functional unit of the nervous system is the

   1. nephron
   2. neuron
   3. axon
   4. synapse

2. The gap between two neurons is called a

   1. dendrite
   2. synapse
   3. axon
   4. node

3. A sudden, automatic response to a stimulus is a

   1. voluntary action
   2. reflex action
   3. thought
   4. habit

4. The pathway of a reflex action is the

   1. reflex arc
   2. axon
   3. neuron
   4. synapse

5. Reflex actions are controlled mainly by the

   1. cerebrum
   2. spinal cord
   3. cerebellum
   4. medulla

6. The part of the brain that controls balance and posture is the

   1. cerebrum
   2. cerebellum
   3. medulla
   4. pons

7. Thinking and memory are functions of the

   1. cerebellum
   2. cerebrum
   3. medulla
   4. spinal cord

8. Which controls involuntary actions like heartbeat?

   1. cerebrum
   2. cerebellum
   3. medulla oblongata
   4. pons

9. Chemical messengers secreted by endocrine glands are

   1. enzymes
   2. hormones
   3. neurotransmitters
   4. vitamins

10. The master gland of the body is the

    1. thyroid
    2. pituitary
    3. pancreas
    4. adrenal

11. Iodine is required to make

    1. insulin
    2. thyroxine
    3. adrenaline
    4. growth hormone

12. Deficiency of iodine causes

    1. diabetes
    2. goitre
    3. dwarfism
    4. tetany

13. The 'fight or flight' hormone is

    1. insulin
    2. adrenaline
    3. thyroxine
    4. testosterone

14. Insulin is secreted by the

    1. liver
    2. pancreas
    3. thyroid
    4. adrenal

15. Deficiency of insulin causes

    1. goitre
    2. diabetes
    3. dwarfism
    4. gigantism

16. Directional growth movement of a plant towards a stimulus is

    1. nastic movement
    2. tropism
    3. reflex
    4. translocation

17. Growth of shoot towards light is

    1. geotropism
    2. phototropism
    3. hydrotropism
    4. chemotropism

18. Roots growing towards gravity show

    1. phototropism
    2. geotropism
    3. hydrotropism
    4. thigmotropism

19. The plant hormone that promotes cell elongation is

    1. auxin
    2. abscisic acid
    3. cytokinin
    4. ethylene

20. The only gaseous plant hormone is

    1. auxin
    2. gibberellin
    3. ethylene
    4. cytokinin

21. Assertion: Reflex actions are faster than voluntary actions. Reason: They bypass the brain and are processed in the spinal cord.

    1. Both true, R explains A
    2. Both true, R not explanation
    3. A true, R false
    4. A false, R true

22. The neurotransmitter that crosses the synapse is

    1. insulin
    2. acetylcholine
    3. thyroxine
    4. auxin

23. The correct sequence of a reflex arc is

    1. receptor→motor→spinal cord→sensory→effector
    2. receptor→sensory→spinal cord→motor→effector
    3. effector→motor→spinal cord→sensory→receptor
    4. receptor→spinal cord→effector

24. Dendrites of a neuron

    1. carry impulse away
    2. receive impulses
    3. store hormones
    4. make ATP

25. The part of the neuron that carries impulses away from the cell body is the

    1. dendrite
    2. axon
    3. synapse
    4. nucleus

26. The folding of Mimosa (touch-me-not) leaves is a

    1. tropic movement
    2. nastic movement
    3. growth movement
    4. reflex

27. Abscisic acid is a hormone that

    1. promotes growth
    2. inhibits growth/causes wilting
    3. ripens fruit
    4. elongates cells

28. Which gland secretes growth hormone?

    1. thyroid
    2. pituitary
    3. adrenal
    4. pancreas

29. Excess growth hormone in childhood causes

    1. dwarfism
    2. gigantism
    3. goitre
    4. diabetes

30. Nervous coordination in plants is

    1. present
    2. absent
    3. partial
    4. seasonal

More Class 10 Science quizzes