what is the male reproductive cell
isogamete - either of a pair of conjugating gametes of the same size and structure. sperm, sperm cell, spermatozoan, spermatozoon - the male reproductive cell; the male gamete; a sperm is mostly a nucleus surrounded by little other cellular material. egg cell, ovum - the female reproductive cell; the female gamete. spermatid - an immature gamete produced by a spermatocyte; develops into a spermatozoon. oosphere - a gamete; used especially of lower plants. antherozoid, spermatozoid - a motile male gamete of a plant such as an alga or fern or gymnosperm.