Spermatogonia formed after which cell division

Number of chromosomes in secondary oocyte stage in human is

Assertion : Head of sperm consists of acrosome and mitochondria.

Reason : Acrosome contains spiral row of mitochondria.

Choose false sentence.

The process of releasing the ripe female gamete from the ovary is called

When male ejaculates sperms during coitus of which for normal fertility at least....... percent sperms must have normal shape and size and at least ...........per cent of them must show vigorous motility