The cotyledon is basically stored-up plant food.

叶基本上是储存的植物性食物。

When you eat a bean, your body also uses the cotyledon to give you energy!

当你吃一颗豆时，你的身体也会叶为你能量！

So the cotyledon gives the embryo the little boost it needs.

所以叶给胚胎它所需要的一点点刺激。

The rest of the bean is made up of this solid white stuff, and it has a funny name: it's called the cotyledon.

豆的其余部分是由这种纯白色的东西组成的，它有一个有趣的名字：它叫做叶。

It can be shown that plants most widely different in habit and general appearance, and having strongly marked differences in every part of the flower, even in the pollen, in the fruit, and in the cotyledons, can be crossed.

可以证明， 在习性和一般外观上差异最大的植物， 以及在花的每一部分，甚至在花粉、 果实和叶中都具有强烈显着差异的植物， 是可以杂交的。