Graafian follicle gets converted into . . . . . . after ovulation under the effect of . . . . . . .

The hormones secreted by the sperm are called:

$FSH$ hormone acts on the Sertoli cells and stimulates the secretion of some factors which help in the process of spermiogenesis.

Holoblastic cleavage may occur in eggs which are

Given below are two statements:
$Statement-I$: At the onset of puberty, the pituitary gland begins secretion of gonadotropin releasing hormone.
$Statement-II$: $GnRH$ initiates the significant increase in the secretion of follicle stimulating hormone $(FSH)$ which induces gametogenesis.
In light of above statements, choose the correct appropriate answer from the options given below.

What is the ploidy of a primary oocyte?