Number of eggs is determined at birth and will be released 500 mature eggs per month.

Ovum has a spherical in shape with a head, a neck, and a tail.

There are two types of sperms ; sperm with X chromosome and sperm with Y chromosome.

Ovum has only one Y chromosome.

Sperm is bigger than ovum.

Sperm has a large nucleus with small amount of cytoplasm, but ovum has a large cytoplasm with small amount of nucleus.

Acrosome is a part of the head of sperm that contains enzymes to penetrate the egg.

The tail of sperm is flagellum.

Genetics material is located in nucleus.

Ovum is motile because it has cillia on the body of ovum.

The tail of sperm enables them to swim.

Testes can produce mature sperm start from birth.

The peristaltic force can move ovum from oviduct to uterus.

Large number of sperm is released per ejaculation.