The human egg is ...

How many secondary spermatocytes are required to form $400\,million$ spermatozoa?

Graafian follicles are produced by the ovary by the process of

Which of the following labelled parts produces energy for the movement of the tail that facilitates sperm motility essential for fertilisation?

In humans,sperms move after ejaculation at a rate of nearly

Which part of the ovary in mammals acts as an endocrine gland after ovulation?