endosperm

例句：

1. 1. The endosperm isthe part of the seed that stores nutrientsfor the developing embryo.
   胚乳是种子储存养分供胚胎发育的部分。
2. 2. During germination, the endosperm breaksdown and releases nutrients to nourish the growingseedling.
   发芽过程中，胚乳分解并释放养分以滋养生长中的幼苗。
3. 3. The endosperm plays acrucial role in determining the nutritional content ofthe seeds.
   胚乳在决定种子营养成分方面起着至关重要的作用。