What is a spermatozoan?
A spermatozoan is a haploid male gamete whose primary function is to fuse with ovum to restore diploidy and to transmit parental characters to the offspring.
It is a motile sperm cell or moving form of the haploid cell that is the male gamete. This reproductive cell of males survives only in warm environments.
The spermatozoon is characterised by a minimum of cytoplasm and the most densely packed DNA known in eukaryotes.