The human sperms were first seen and discovered by

The growing ovarian follicles mainly secrete a hormone named?

How many eggs (ova) will be formed from $100$ primary oocytes?

Female gamete mother cells are called

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.

The membrane investing the ovum just outside the membrana granulosa is