MCQ Questions for Class 10 Science Control and Coordination with Answers

Free PDF Download of CBSE Class 10 Science Control and Coordination Multiple Choice Questions with Answers. Science Multiple Choice Questions with Answers for Class 10 are Prepared Based on Latest Exam Pattern. Students can solve mcq questions for class 10 Science Control and Coordination to know their preparation level.

Class 10 Science MCQ Chapter 7 Control and Coordination

Question 1. Which plant hormone promotes dormancy in seeds and buds?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid

Question 2. Roots of plants are:
(a) positively geotropic
(b) negatively geotropic
(c) positively phototropic
(d) None of these

Question 3. Response of plant roots towards water is called:
(a) Chemotropism
b) Phototropism
(c) Hydrotropism
(d) Geotropism

Question 4. Movement of sunflower in accordance with the path of Sun is due to
(a) Chemotropism
(b) Geotropism
(c) Phototropism
(d) Hydrotropism

Question 5. Which plant hormone promotes cell division?
(a) Auxin
(b) Gibberellin
(c) Cytokinin
(d) Abscisic acid

Question 6. The main function of abscisic acid in plants is
(a) to promote cell division.
(b) to inhibit growth.
(c) to promote growth of stem.
(d) to increase the length of cells.

Question 7. Fall of mature leaves and fruits from plants is triggered by which of the following substance?
(a) Auxin
(b) Cytokinin
(c) Gibberellin
(d) Abscisic acid

Question 8. Any change in the environment to which an organism responds is called
(a) stimulus
(b) coordination
(c) response
(d) hormone

Question 9. A part of the body which responds to the in-structions sent from nervous system is called
(a) receptor
(b) effector
(c) nerves
(d) muscles

Question 10. The longest fibre on the cell body of a neuron is called
(a) sheath
(b) cytoplasm
(c) axon
(d) dendrites

Question 11. Which nerves transmit impulses from the cen¬tral nervous system towards muscle cells?
(a) Sensory nerves
(b) Motor nerves
(c) Relay nerves
(d) Cranial nerves

Question 12. A microscopic gap between a pair of adjacent neurons over which nerve impulses pass is called
(a) neurotransmitter
(b) dendrites
(c) axon
(d) synapse

Question 13.

Give the missing term.
(a) Spinal cord
(b) Brain
(c) Cranial nerves
(d) Relay nerves

Question 14. The highest coordinating centre in the human body is
(a) spinal cord
(b) heart
(c) brain
(d) kidney

Question 15. Main function of cerebrum is
(a) thinking
(b) hearing
(c) memory
(d) balancing

Question 16. Posture and balance of the body is controlled by
(a) Pons
(b) Medulla oblongata
(c) Cerebellum
(d) Cerebrum

Question 17. Breathing is controlled by which part of the brain?
(a) Cerebrum
(b) Cerebellum
(c) Hypothalamus
(d) Medulla oblongata

Question 18. Which part of nervous system controls the re¬flex activities of the body?
(a) Brain
(b) Spinal cord
(c) Cerebrum
(d) Cerebellum

Question 19. Which of the following acts as both endocrine and exocrine gland?
(a) Pancreas
(b) Thyroid
(c) Adrenal
(d) Liver

Question 20. Identify which of the following statements about thyroxin is incorrect?
(a) Thyroid gland requires iodine to synthesize thyroxin.
(b) Thyroxin is also called thyroid hormone.
(c) It regulates protein, carbohydrates and fat metabolism in the body.
(d) Iron is essential for the synthesis of thyroxin.

Question 21. Which gland secretes the growth hormone?
(a) Pituitary gland
(b) Thyroid
(c) Hypothalamus
(d) Adrenal

Question 22. The secretion of which hormone leads to physical changes in the body when you are 10-12 years of age?
(a) Oestrogen from testes and testosterone from ovar^.
(b) Estrogen from adrenal gland and testosterone from pituitary gland.
(c) Testosterone from testes and estrogen from ovary.
(d) Testosterone from thyroid gland and estrogen from pituitary gland.

Question 23. A diabetic patient suffers from deficiency of which hormone?
(a) .Thyroxine
(b) Testosterone
(c) Oestrogen
(d) Insulin

Question 24. Which of the following endocrine glands does not exist in pairs?
(a) Testes
(b) Adrenal
(c) Pituitary
(d) Ovary

Fill in the Blanks

1. Control and coordination are the functions of the nervous system and ……… in our body.
2. The nervous system uses ……… impulses to transmit messages.
3. Central nervous system consists of ……… and ……… .
4. Largest part of the brain is ……… .
5. Defeciency of ……… hormone in childhood leads to dwarfism in humans.
6. The growth of pollen tubes towards the ovules is the result of a ……… movement.

Answers

1. hormones
2. electrical
3. brain, spinal cord
4. cerebrum
5. growth
6. chemotropic

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