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桃子的结构在形成以前各是什么
更新时间: 2020-09-18 00:00:00  

桃子从外到里的结构是:果皮、果肉、种壳、种皮、胚,其中,果皮即外果皮、果肉即中果皮、种壳即内果皮,这三个都是从子房壁发育来的,中果皮是桃子可食用的部分,而桃子的种皮是由珠被发育的,种子的胚是由胚珠发育的。

关键词: 桃子 结构 形成 以前 什么

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