cotyledon 的定义
Botany.
- the primary or rudimentary leaf of the embryo of seed plants.
- Anatomy. any of several lobules of the placenta.
更多cotyledon例句
- The term monocotyledon is applied to these plants because the embryo has only one cotyledon or seed-leaf.
- A bristle was gummed to one cotyledon, and beyond it a triangular bit of card was fixed, and in front a vertical glass.
- Within the cotyledon will be found a little growing shoot pointed toward the top of the kernel.
- In Wheat and Oats the cotyledon can be easily seen in the largest seedlings by pulling off the dry husk of the grain.
- Closely applied to one side of this, so closely that it is difficult to separate it perfectly, is the single cotyledon.