In a mesolecithal egg,one would expect:

Which endocrine structure is formed after ovulation?

The mother germ cells are transformed into a mature follicle through a series of steps. Provide the missing steps in the blank boxes.
$\boxed{\text{Oogonia}} \to \boxed{A} \to \boxed{\text{Primary follicle}} \to \boxed{B} \to \boxed{C} \to \boxed{\text{Mature or Graafian follicle}}$

Androgen stimulates the $...A...$ $FSH$ acts on the $...B...$ and stimulates factors for spermiogenesis. Here $A$ and $B$ refers to

The process of formation of a mature sperm from a spermatid is called $:-$

Where does the functional maturation of sperm occur?