Assertion: Spermatogenesis starts at the age of puberty due to the increased secretion of FSH.
Reason: GnRH is a hypothalamic hormone that stimulates the secretion of LH and FSH, which play a crucial role in the process of spermatogenesis.
Both assertion and reason are true and reason is the correct explanation of the assertion.
Both assertion and reason are true but reason is not the correct explanation of the assertion.
Assertion is true but reason is false.
Assertion is false but reason is true.
Spermatogenesis does start at the age of puberty due to the increased secretion of GnRH, which stimulates the secretion of both LH and FSH. However, the assertion that FSH is solely responsible for the initiation of spermatogenesis is incorrect, as both LH and FSH play important roles in the process. Therefore, while the assertion is true, the reason given is false, and does not provide a correct explanation.
Option c is the correct answer.