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NEET 2016 Phase 1 · BiologyPrevious Year Question

Identify the correct statement on 'inhibin':

Answer: (B) Is produced by granulose cells in ovary and inhibits the secretion of FSH. Answer: (b) Is produced by granulosa cells in ovary and inhibits the secretion of FSH Solution: Inhibin is secreted by the granulosa cells of the ovarian follicles (and Sertoli cells in the testis) and selectively suppresses FSH secretion from the pituitary, not LH.

  1. A.Inhibits the secretion of LH, FSH and Prolactin
  2. B.Is produced by granulose cells in ovary and inhibits the secretion of FSH✓
  3. C.Is produced by granulose cells in ovary and inhibits the secretion of LH
  4. D.Is produced by nurse cells in testes and inhibits the secretion of LH

Correct Answer

(B) Is produced by granulose cells in ovary and inhibits the secretion of FSH

Solution & Explanation

Answer: (b) Is produced by granulosa cells in ovary and inhibits the secretion of FSH Solution: Inhibin is secreted by the granulosa cells of the ovarian follicles (and Sertoli cells in the testis) and selectively suppresses FSH secretion from the pituitary, not LH. NCERT establishes that FSH from the pituitary drives growth and development of the ovarian follicles, the very cells that produce inhibin to provide negative feedback on FSH. NCERT Reference: Chapter 19, Page 241, Line(s) 46 — "FSH stimulates growth and development of the ovarian"

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