Answer:
'Gametes are defined as mature germ cells that fuse with gametes of opposite sex in organisms that perform sexual reproduction.'
Eggs or ova are female gametes and sperms are male gametes. Gametes are haploid in nature as they are formed by meiosis, which leads to formation of haploid daughter cells from diploid parent cell.
Male and female gametes fuse together by the process of fertilization to form zygote that develops into multicellular organism.