The plastids developed as the so called proplastids.
质体转变为所谓的原质体。
Proplastids possessed a simple fine structure with a few or without any internal membranes.
原质体结构简单,含少量或不含内膜结构。
The proplastids differentiate to form characteristic organelles such as amyloplasts, chloroplasts and chromoplasts.
前质体能分化成各具特点的细胞器,如淀粉体,叶绿体和有色体。
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