A sperm cell is called a spermatozoon.
Spermatozoa
Spermatozoon.
Spermatozoon.
polar body
Spermiogenesis.
Spermatozoon
first polar body
ovum is the product after the secondary oocyte fuses with sperm
spermatozoon
Male gametes or sperms are known as spermatozoa...
plasma membrane of the oocyte!