精子
3.In human reproduction,one female egg is usually fertilized by one spunk.
5.ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids.
6.A hermaphroditic reproductive organ that produces both sperm and eggs, found in certain gastropods.
7.An organic cell or organized body that has independent movement within a living organism, especially a motile gamete such as a spermatozoon.
