书城教材教辅科学读本(英文原版)(套装1-6册)
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第325章 第三册(150)

The sepals and petals protect the stamens and pistil while they are young. The pollen grains from the anthers pass down into the ovary, and carry a small drop of fluid to make the ovules into seeds. The bees, and other insects, do most of the work of carrying pollen from one ?ower to another.

Lesson 53

Seeds

"Last time we were talking about the flowers, Norah, I showed you the ovules in the little seed- pod of the wallflower," said Fred. "I have here one of the same seed-pods, so ripe that it is splitting open. You can see that the ovules have become actual seeds.