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NEET 2019 · BiologyPrevious Year Question

Select the incorrect statement:

Answer: (C) LH and FSH decrease gradually during the follicular phase. Answer: (C) LH and FSH decrease gradually during the follicular phase Solution: During the follicular phase the secretion of gonadotropins LH and FSH actually increases gradually and peaks at mid-cycle, so the statement that they decrease is incorrect.

  1. A.FSH stimulates the sertoli cells which help in spermiogenesis
  2. B.LH triggers ovulation in ovary
  3. C.LH and FSH decrease gradually during the follicular phase✓
  4. D.LH triggers secretion of androgens from the Leydig cells

Correct Answer

(C) LH and FSH decrease gradually during the follicular phase

Solution & Explanation

Answer: (C) LH and FSH decrease gradually during the follicular phase Solution: During the follicular phase the secretion of gonadotropins LH and FSH actually increases gradually and peaks at mid-cycle, so the statement that they decrease is incorrect. The other statements are correct: FSH acts on Sertoli cells (aiding spermiogenesis), LH triggers ovulation, and LH stimulates androgen secretion from Leydig cells. NCERT Reference: Ch 2, p.35, line 3 — "gonadotropins (LH and FSH) increases gradually during the follicular"

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