| 释义 |
子叶zǐyè种子植物胚的组成部分之一,是种子萌发时的营养器官。单子叶植物的胚只有一枚子叶,双子叶植物的胚有一对子叶,裸子植物的胚有两个或两个以上的子叶。{cotyledon; one of the component parts of the embryo of a seed plant, which serves as a nutritional organ when the seed sprouts. The embryo of a monocotyledon has only a single cotyledon, that of a dicotyledon has a pair, and that of gymnosperm has two or more cotyledons.} |