Assertion: A male is found to be lacking facial hair and pubic hair.
Reason: It is a case of hyposecretion of testosterone from Leydig's cells of testes.

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.

Solution

If both assertion and reason are true and reason is the correct explanation of assertion.

Leydig's cells or interstitial cells of testes are large, polygonal cells that lie in the connective tissue present between the seminiferous tubules. They secrete androgens, the male sex hormones e.g., testosterone into the blood. Androgens control male sexual characteristics including facial and pubic hairs.