The term sperm's derived from the Greek word (σπέρμα) sperma (meaning "seed") and refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there's a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The human sperm cell's haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell. A uniflagellar sperm cell that's moti… (More on Sperm)