gametophyte造句
例句与造句
- The polar and egg nuclei of the female gametophyte are genetically identical .
雌配子体中的极核和卵核遗传上是同一的。 - The gametophyte is derived from the product of a reduction division in the megaspore mother cell .
该配子体是由大孢子母细胞进行减数分裂而来。 - A study on the development of the anther and the male gametophyte in
单穗升麻的花药和雄配子体发育 - The female gametophyte is represented by the embryosac , the archegonia being absent
雌性配子体存在于胚囊中，颈卵器缺失。 - The female gametophyte is reduced , but larger than in angiosperms ; it is not autotrophic
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。 - It's difficult to find gametophyte in a sentence. 用gametophyte造句挺难的
- The megasporogenesis and microsporogenesis of phytolacca acinosa roxb . and formation of its male and female gametophytes
商陆大小孢子的发生和雌雄配子体的形成 - They show a heteromorphic alternation of generations , the gametophyte eging the dominant generation
苔藓植物具有明显的世代交替现象，配子体在世代交替中占优势。 - The present paper deals with the microsporogenesis and the development of its male gametophytes and the anther wall
论述单穗升麻的小孢子发生和雄配子体发育以及花药壁的发育。 - Light plays very important role in the growth of gametophyte clone . light time and intensity affect its growth directly
在光周期为24h d ，光照强度为1500 - 2500lux条件下，克隆细胞具有最快的生长速度。 - In vascular plants the diploid sporophyte is the dominant phase and in the ferns , for example , the gametophyte is a small prothallus
在维管植物（蕨类）中二倍体的孢子体占生活史的主要部分，配子体仅为原叶体。 - Rhizoid a unicellular rootlike structure found in certain algae and in the gametophyte generation of the bryophytes and some ferns
假根：在一些藻类、苔藓植物和裸子植物配子体中存在的由单个细胞形成的类似根的结构。 - The gametes fuse to form a zygote , which develops into the sporophyte , and the spores germinate and produce the gametophyte , so forming a cycle
配子融合产生合子，进而发育为孢子体，孢子萌发产生配子体，形成一个循环。 - The haploid plant produces gametes mitotically and is thus termed the gametophytes while the diploid plant produces spores meiotically and is called the sporophyte
单倍体植物有丝分裂产生配子体，二倍体减数分裂产生孢子体。 - When mature the gametophyte shows differentiation into stem and leaves but there are no roots or vascular tissues , but mosses do possess elongated conducting cells
当成熟时，配子体表现出茎和叶的分化，但没有根和维管组织，但藓类拥有一些延长的传导细胞。 - 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
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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