以下为句子列表：
英文: The concept of an alternation of generations can be extended to the flowering plants, in which the embryo sac and pollen represent the much reduced famale and male gametophyte generations respectively.
中文: 这个概念也可以运用在有花植物上，由胚囊和花粉各自表达雌雄配子体世代。
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英文: The female gametophyte is reduced, but larger than in angiosperms; it is not autotrophic.
中文: 裸子植物的雌配子体简化，但较被子植物体的体积大，不能自养。
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英文: The female gametophyte is represented by the embryosac, the archegonia being absent.
中文: 雌性配子体存在于胚囊中，颈卵器缺失。
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英文: Megasporogenesis,Microsporogenesis and Development of Female and Male Gametophyte of Bupleurum chinense;
中文: 柴胡大、小孢子发生及雌、雄配子体发育
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