| 单词 | gametophyte |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔apospory〕The development of a gametophyte directly from a sporophyte without the occurrence of meiosis or spore formation.无孢子形成，无孢子生殖，无孢子状态：没有经过减数分裂或孢子形成而直接由孢子体进行的配子体发育美国传统〔embryo sac〕The female gametophyte of a seed plant, within which the embryo develops.胚囊：种子植物的雌性配偶体，胚胎在其中发育美国传统〔generative cell〕A cell of the male gametophyte or pollen grain in seed plants that divides to give rise directly or indirectly to sperm.生殖细胞：雄性配子体的一个细胞或种子植物中的花粉颗粒，分裂后直接或间接地产生精子美国传统〔megagametophyte〕The female gametophyte that arises from a megaspore of a heterosporous plant.雌配子体：从有异型配子体的植物的大配子中长出的雌性配子体美国传统〔microspore〕The smaller of two types of spores that give rise to a male gametophyte.小孢子：两种孢子中较小的一种，其产生一雄性配子体美国传统〔pollen grain〕A microspore of seed plants, containing a male gametophyte.花粉粒：种子植物的花粉粒，含有一个雄性的配子体美国传统〔prothallus〕A small, flat, delicate structure produced by a germinating spore and bearing sex organs. It is the gametophyte of ferns and some other plants.原叶体：一种由孢子萌发产生的小而平面脆弱的结构，带有生殖器官它是蕨类和其它一些植物的配子体美国传统〔protonema〕The green, filamentous growth that arises from spore germination in liverworts and mosses and eventually gives rise to a mature gametophyte.原丝体：由叶苔或苔藓的孢子萌芽发展而成的绿色丝状生长物，最终发展成配子体美国传统〔rhizoid〕A slender rootlike filament by which mosses, liverworts, and fern gametophytes attach to the substratum and absorb nourishment.假根：一种纤细的似根丝状体，苔藓、地钱及蕨类的配子体通过它附着于基质并吸收营养美国传统 |
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