四倍体与二倍体在形态学和细胞学上有明显差异。
There are obvious difference on morphology and cytology between polypoid and diploid .
二倍体功能大孢子的合点端细胞壁内的胼胝质荧光消失。
As development goes on, callose fluorescence disappears in the chalazal wall of diplosporous functional megaspore .
硅藻类的营养细胞是二倍体，它是由配子融合直接产生的。
In diatoms the vegetative cells are diploid, and are formed directly by the fusion of gametes.
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