Question

what is sperm ? and what are its main uses ?

Answer 1

it is male gamete  of human consisting of a head,neck ,middle piece,and tail. It fertilises with female gamete which leads to formation of zygote.  

Answer 2

Sperm is a reproductive cell that are produced by testes in males . It fuses with the egg (female reproductive cell) to form zygote, then embryo and finally a new fertile offspring - a baby!