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花发育成果实的四个步骤
更新时间： 2021-06-02 19:36:16  

1、一般情况下，植物要结出果实，需依次经过开花、传粉、受精、以及果实和种子的形成四个阶段。

2、受精完成后，受精的卵细胞发育成胚，受精的极核发育成胚乳，珠被发育成种皮、胚珠发育成种子，子房壁发育成果皮，子房发育成果实。

关键词： 发育 果实 步骤

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