Which one of the following hormones is related to spermatogenesis?

The correct answer is Option (1) → Androgens

Spermatogenesis is controlled by a chain of hormones. GnRH from the hypothalamus makes the pituitary release LH and FSH. LH makes the Leydig cells secrete androgens, and androgens in turn stimulate spermatogenesis. FSH acts on the Sertoli cells.

Option (1) Androgens — Correct. The male hormones from the Leydig cells directly stimulate the process of spermatogenesis.

Option (2) Estrogen — Incorrect. Estrogen is a female hormone, made by the growing ovarian follicles.

Option (3) Progesterone — Incorrect. Progesterone is made by the corpus luteum and keeps the endometrium ready for pregnancy.

Option (4) LH — Incorrect. LH (luteinising hormone) works one step earlier: it acts on the Leydig cells, which then make the androgens that drive spermatogenesis.

NCERT Extract:
Gametogenesis – “… Spermatogenesis starts at the age of puberty due to significant increase in the secretion of gonadotropin releasing hormone (GnRH). This, if you recall, is a hypothalamic hormone. The increased levels of GnRH then acts at the anterior pituitary gland and stimulates secretion of two gonadotropins – luteinising hormone (LH) and follicle stimulating hormone (FSH). LH acts at the Leydig cells and stimulates synthesis and secretion of androgens. Androgens, in turn, stimulate the process of spermatogenesis.”