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Class 11 Biology Chapter 22 Chemical Coordination And Integration Quiz 3 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Which one is different from the category of other three?

Correct Answer: B) Ptyalin.

2. The steroid responsible for balance of water and electrolytes in our body is

Correct Answer: D) Aldosterone.

3. Which of the following hormones regulates the immune system?

Correct Answer: C) Thymosin.

4. One of the following conditions is not linked to deficiency of thyroid hormones

Correct Answer: D) Exophthalmos.

5. The hormones secreted by endocrine glands are released into the

Correct Answer: B) Venous blood.

6. Whose excessive secretion causes abnormal elongation of long bones in childhood?

Correct Answer: A) Growth hormone.

7. Which element is required for the synthesis of thyroxine?

Correct Answer: B) Iodine.

8. Treatment with Allison destroys

Correct Answer: B) Beta cell of Langerhans.

9. Pituitary dwarfism is caused due to the deficiency of

Correct Answer: B) Growth hormone.

10. Which hormone stimulates ovulation in females?

Correct Answer: C) Luteinizing hormone (LH).

11. A-iodothyronine can regulate gene expressionR-hormone receptor complex can interact with nuclear genome

Correct Answer: A) A&R both true, R is the correct explanation of A.

12. What hormone is secreted by the pineal gland?

Correct Answer: A) Melatonin.

13. Endocrine glands produce or action of endocrine glands is mediated through:

Correct Answer: A) Hormones.

14. ..... is / are glands that are present on the dorsal surface of thyroid gland.

Correct Answer: C) Parathyroid glands.

15. Neurohypophysis is also known as

Correct Answer: C) Pars nervosa.

16. Thyroxine has an important role in regulating

Correct Answer: D) Both (b) and (c).

17. Which of the following anterior pituiary is linked directly to body whereas other hormones mostly control other glands?

Correct Answer: A) Somatotropin.

18. Which of the following is caused due to hypersecretion of thyroxin hormone?

Correct Answer: B) Exophthalmic goitre.

19. A-prolactin regulates the growth of mammary glands and formation of milk in themR-prolactin is synthesized only in pregnancy

Correct Answer: C) A is true, but R is false.

20. A-melatonin can influence metabolism and pigmentationR-pineal gland is located on the dorsal side of forebrain

Correct Answer: B) A&R both true, but R is not correct explanation of A.

21. ..... secretes glucagon hormone

Correct Answer: D) Pancreas.

22. Glucagon acts on liver cells and stimulates the conversion of glycogen into

Correct Answer: C) Glucose.

23. Which gland atrophies after puberty?

Correct Answer: A) Thymus.

24. Glucagon and insulin are

Correct Answer: D) Secreted from different cells but are opposite in function.

25. Which gland is known as the 'master gland' of the endocrine system?

Correct Answer: B) Pituitary gland.

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