Semen consists of an enzyme called

The middle piece of the sperm contains

Which of the following type of reproduction occurs in sponges?

The gestation period of human being is

Prostate gland secretion helps in the formation of

Female gamete develops into a new individual without being fertilized by a male gamete is called

Sperms are stored in earthworm after fertilization in

The period of pregnancy is referred as the

The post-embryonic growth is

The preparation of sperm, before penetration into ovum, is called