Sperms are released from the seminiferous tubules by the process called .....

How many spermatozoa are produced from a primary spermatocyte during spermatogenesis?

In humans,how many ova can $10$ secondary oocytes produce,and how many secondary spermatocytes are required to produce $40$ spermatozoa?

When is the second polar body extruded from the oocyte nucleus?

Provide a schematic labelled diagram to represent oogenesis.

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.