极核
However, the polar nuclei might develop the normal endosperm as long as they had been fertilized.
但是, 其极核必需经过受精过程才能发育为胚乳.
The polar nuclei autonomously developed into endosperm without fertilization and the egg apparatus ultimately degenerated.
卵器最终退化,极核不经受精自发形成胚乳.
英语网 · 高中英语
英语网 · 初中英语作文
英语网 · 双语娱乐资讯
英语网 · 中考英语
英语网 · 高考英语