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NEETZoologyHuman Reproduction

Read the following paragraph and identify the hormones and processes labelled as [A], [B], [C], and [D]. At puberty, increased levels of GnRH stimulate the anterior pituitary to secrete two gonadotropins. Hormone [A] acts on Leydig cells to stimulate the synthesis of androgens, which in turn stimulate the process of [B]. Hormone [C] acts on Sertoli cells to stimulate secretion of some factors which help in the proces

Options

  1. A[A] - FSH, [B] - spermiogenesis, [C] - LH, [D] - spermatogenesis
  2. B[A] - LH, [B] - spermatogenesis, [C] - FSH, [D] - spermiogenesis
  3. C[A] - LH, [B] - spermiogenesis, [C] - FSH, [D] - spermiation
  4. D[A] - FSH, [B] - spermatogenesis, [C] - LH, [D] - spermiogenesis

Correct answer

B. [A] - LH, [B] - spermatogenesis, [C] - FSH, [D] - spermiogenesis

Step-by-step solution

According to NCERT, at puberty, GnRH stimulates the anterior pituitary to release two gonadotropins: LH and FSH. LH (Luteinising Hormone) acts on the Leydig cells to stimulate the synthesis and secretion of androgens. Androgens then stimulate the entire process of spermatogenesis. FSH (Follicle Stimulating Hormone) acts on the Sertoli cells and stimulates the secretion of some factors which help in the process of spermiogenesis (the transformation of spermatids into spermatozoa). Therefore, [A] is LH, [B] is sperma

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