During coitus,the human male ejaculates about ...... number of sperms.

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

The Graafian follicle ruptures to release the secondary oocyte (ovum) from the ovary by the process called:

In mammals,the female secondary sexual characters are developed by the hormone:

Androgen binding protein,which helps in concentrating testosterone in the seminiferous tubule,and which inhibits $ICSH$ secreted by the anterior pituitary and $GnRH$ production by the hypothalamus,is secreted by:

What does a mature sperm contain?