In the embryonic development of chordate the animal pole forms one of the following of the adult

A boy who has not passed through puberty sustains an injury to his anterior pituitary such that $FSH$ is no longer released, but $LH$ secretion is normal. After he grows to maturity, one would expect that he would

Bartholin’ s glands are situated

Give scientific reasons : When male excites sexually epididymis wall shrinks / contracts.

The yolk plug of gastrula represents in the later stage its