心皮是由大孢子叶两边愈合进化而来的.It has evolved by fusion of the two edges of the megasporophyll.孢子异型:指植物产生两种大小不同的孢子: 小孢子和大孢子.Heterospory The production of two different sizes of spore: microspores and megaspores.通常较大的大孢子含有更多的贮藏养料.The ...

“大孢子”的英语可以翻译为：megaspore，macrospore，gynospore ...

“大孢子”的拼音为：dà bāo zǐ...