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MCQ Questions for Class 10 Science with Answers Biology
Q1. Which part of nervous system controls the re¬flex activities of the body?
(B) Spinal cord
Q2. Any change in the environment to which an organism responds is called
Q3. Which of the following acts as both endocrine and exocrine gland?
Q4. Posture and balance of the body is controlled by
Q5. Growth hormone is produced in:
Q6. How many pairs of cranial nerves are present in man?
Q7. 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.
Q8. In case of emergency which structure becomes very active:
(A) adrenal medulla
(B) adrenal cortex
(C) thyroid gland
Q9. Iodine is necessary for the synthesis of which hormone?
Q10. Fall of mature leaves and fruits from plants is triggered by which of the following substance?
(D) Abscisic acid
Q11. Which gland secretes the growth hormone?
(A) Pituitary gland
Q12. In a neuron, conversion of electrical signal to a chemical signal occurs at/in
(A) cell body
(B) axonal end
(C) dendritic end
Q13. Progesterone is secreted by:
Q14. Reflex actions are mediated through
(C) spinal cord
Q15. Response of plant roots towards water is called:
Q16. Insulin is secreted by:
Q17. Choose the incorrect statement about insulin
(A) It is produced from pancreas
(B) It regulates growth and development of the body
(C) It regulates blood sugar level
(D) Insufficient secretion of insulin will cause diabetes
Q18. Which plant hormone promotes cell division?
(D) Abscisic acid
Q19. A diabetic patient suffers from deficiency of which hormone?
Q20. The substance that triggers the fall of mature leaves and fruits from plants is due to
(C) abscisic acid
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MCQ Questions for Class 10 Science Chemistry with Answers
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