詞語:prothallus
prothallus的意思
prothallus 原葉體;
prothallus的參考例句
1.In homosporous plants, there is only one type of prothallus with both male and female sex organs. 在具同形孢子的植物中,只有一種雌雄性器官兼備的原葉體類型。
2.Prothallus (pl. prothalli) A flattened disk of cells that forms the free-living haploid gametophyte generation of certain ferns, e. g. Dryopteris. 一種扁平的葉狀體,它是某些蕨類植物的能獨立生活的單倍性配子體,如鱗毛蕨屬。
3.In many gymnosperms the nuclei divide within the pollen grain to produce a small number of cells (2-40 depending on the group )representing the male prothallus. 在許多裸子植物中,細胞核在花粉粒中分裂以產生少量的細胞(2~40個,取決於不同種類),代表雄性原葉體。