NCERTCOURSE.COM- Find here the NCERT/CBSE chapter-wise Multiple Choice Questions from Class 10 Science book Chapter 7 Control and Coordination with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Control and Coordination. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.
MCQ Questions for Class 10 Science with Answers Biology
Q1. Any change in the environment to which an organism responds is called
(i) stimulus
(ii) coordination
(iii) response
(iv) hormone
(i) stimulus
Q2. Posture and balance of the body is controlled by
(i) cerebrum
(ii) cerebellum
(iii) medulla
(iv) pons
(ii) cerebellum
Q3. How many pairs of cranial nerves are present in man?
(i) 12
(ii) 21
(iii) 31
(iv) 41
(i) 12
Q4. In case of emergency which structure becomes very active:
(i) adrenal medulla
(ii) adrenal cortex
(iii) thyroid gland
(iv) pancreas
(i) adrenal medulla
Q5. Fall of mature leaves and fruits from plants is triggered by which of the following substance?
(i) Auxin
(ii) Cytokinin
(iii) Gibberellin
(iv) Abscisic acid
(iv) Abscisic acid
Q6. In a neuron, conversion of electrical signal to a chemical signal occurs at/in
(i) cell body
(ii) axonal end
(iii) dendritic end
(iv) axon
(ii) axonal end
Q7. Reflex actions are mediated through
(i) brain
(ii) effectors
(iii) spinal cord
(iv) receptors
(iii) spinal cord
Q8. Insulin is secreted by:
(i) stomach
(ii) liver
(iii) pancreas
(iv) kidney
(iii) pancreas
Q9. Which plant hormone promotes cell division?
(i) Auxin
(ii) Gibberellin
(iii) Cytokinin
(iv) Abscisic acid
(iii) Cytokinin
Q10. The substance that triggers the fall of mature leaves and fruits from plants is due to
(i) auxin
(ii) gibberellin
(iii) abscisic acid
(iv) cytokinin
(iii) abscisic acid
Q11. Which hormone regulates the ionic balance in the body?
(i) Glucagon
(ii) Thyroxine
(iii) Testosterone
(iv) Vasopressin
(iv) Vasopressin
Q12. Female sex hormone is:
(i) estrogen
(ii) androgen
(iii) insulin
(iv) adrenalin
(i) estrogen
Q13. Response of plant roots towards water is called:
(i) Chemotropism
(ii) Phototropism
(iii) Hydrotropism
(iv) Geotropism
(iii) Hydrotropism
Q14. The growth of pollen tubes towards ovules is due to
(i) hydrotropism
(ii) chemotropism
(iii) geotropism
(iv) phototropism
(ii) chemotropism
Q15. Which of the following acts as both endocrine and exocrine glands?
(i) Adrenal
(ii) Pituitary
(iii) Ovaries
(iv) Pancreas
(iv) Pancreas
Q16. Which endocrine gland is called master gland:
(i) pituitary
(ii) adrenal
(iii) thyroid
(iv) pancreas
(i) pituitary
Q17. Which of the following endocrine glands does not exist in pairs?
(i) Testes
(ii) Adrenal
(iii) Pituitary
(iv) Ovary
(iii) Pituitary
Q18. The shape of guard cells changes due to change in the
(i) protein composition of cells
(ii) temperature of cells
(iii) amount of water in cells
(iv) position of nucleus in the cells
(iii) amount of water in cells
Q19. Roots of plants are:
(i) positively geotropic
(ii) negatively geotropic
(iii) positively phototropic
(iv) None of these
(i) positively geotropic
Q20. The gap between two neurons is called a:
(i) dendrite
(ii) synapse
(iii) axon
(iv) impulse
(ii) synapse
Q21. A diabetic patient suffers from deficiency of which hormone?
(i) Thyroxine
(ii) Testosterone
(iii) Oestrogen
(iv) Insulin
(iv) Insulin
Q22. Choose the incorrect statement about insulin
(i) It is produced from pancreas
(ii) It regulates growth and development of the body
(iii) It regulates blood sugar level
(iv) Insufficient secretion of insulin will cause diabetes
(ii) It regulates growth and development of the body
Q23. Response of plant roots towards water is called:
(i) Chemotropism
(ii) Phototropism
(iii) Hydrotropism
(iv) Geotropism
(iii) Hydrotropism
Q24. Progesterone is secreted by:
(i) testes
(ii) thyroid
(iii) pituitary
(iv) ovary
(iv) ovary
Q25. Which gland secretes the growth hormone?
(i) Pituitary gland
(ii) Thyroid
(iii) Hypothalamus
(iv) Adrenal
(i) Pituitary gland
Q26. Iodine is necessary for the synthesis of which hormone?
(i) Adrenaline
(ii) Thyroxin
(iii) Auxin
(iv) Insulin
(ii) Thyroxin
Q27. The main function of abscisic acid in plants is
(i) to promote cell division.
(ii) to inhibit growth.
(iii) to promote growth of stem.
(iv) to increase the length of cells.
(ii) to inhibit growth.
Q28. Growth hormone is produced in:
(i) gonads
(ii) thyroid
(iii) pituitary
(iv) adrenal
(iii) pituitary
Q29. Which of the following acts as both endocrine and exocrine gland?
(i) Pancreas
(ii) Thyroid
(iii) Adrenal
(iv) Liver
(i) Pancreas
Q30. Which part of nervous system controls the re¬flex activities of the body?
(i) Brain
(ii) Spinal cord
(iii) Cerebrum
(iv) Cerebellum
(ii) Spinal cord
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