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NEET 2023 Phase 2 · BiologyPrevious Year Question

Which of the following statements are correct with respect to the hormone and its function? (A) Thyrocalcitonin (TCT) regulates the blood calcium level. (B) In males, FSH and androgens regulate spermatogenesis. (C) Hyperthyroidism can lead to goitre. (D) Glucocorticoids are secreted in Adrenal Medulla. (E) Parathyroid hormone is regulated by circulating levels of sodium ions. Choose the most appropriate answer from the options given below :

Answer: (D) (A) and (B) only. Answer: (d) (A) and (B) only Solution: Thyrocalcitonin (TCT) from the thyroid regulates blood calcium levels (A correct), and in males FSH and androgens regulate spermatogenesis (B correct).

  1. A.(B) and (C) only
  2. B.(A) and (D) only
  3. C.(C) and (E) only
  4. D.(A) and (B) only✓

Correct Answer

(D) (A) and (B) only

Solution & Explanation

Answer: (d) (A) and (B) only Solution: Thyrocalcitonin (TCT) from the thyroid regulates blood calcium levels (A correct), and in males FSH and androgens regulate spermatogenesis (B correct). Statement D is wrong because glucocorticoids are secreted by the adrenal CORTEX, not the medulla; hyperthyroidism does not cause goitre and PTH is regulated by calcium (not sodium), so C and E are wrong. NCERT Reference: Chapter 19, Page 243, Line(s) 18 — "thyrocalcitonin (TCT) which regulates the blood calcium levels."

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