小形精子体 nanandrium, dwarf male
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小形精子体 nanandrium, dwarf male 鞘藻属的有性生殖是卵生,有雌雄同株的和雌雄异株的,但在雌雄异株当中,有雌雄同大的大形精子体种( macrandrous species)以及雄器极小,由 2— 3个细胞构成的小形精子体种( nanandrous species),这种小的雄器称为小形精子体。从大形精子体的造精器可放出两个精子,而小形精子体可放出一个。
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