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被子植物的的英文

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"被子植物的"怎么读用"被子植物的"造句

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  • angiospermous

例句与用法

  • Ribosomal rna genes ( rdna ) , a group of tandem repetitive sequence , are well - studied in angiosperms
    被子植物的rrna基因已经得到深入研究。
  • Most angiosperm ovules possess two integuments , while gymnosperms usually have only one
    大多数被子植物的胚珠有两层珠被,而裸子植物通常只有一层。
  • Unlike the companion cells of angiosperms , they are not derived from the same mother cell as the sieve cell
    但与被子植物的伴胞不同,它们不和筛胞起源于一个共同的母细胞。
  • Gymnosperms lack endosperm and the precise double fertilization characteristic of the angiosperms , although some show a primitive form of it
    尽管裸子植物还保留有某些被子植物的基本形态,但它没有被子植物所特有的胚乳以及双受精现象。
  • They differ from conifers and other gymnosperms by having the ovule enclosed within an ovary , which after fertilization develops into a fruit
    被子植物不同于针叶植物和其他的裸子植物,被子植物的胚珠由子房所包被,受精后直接发育为果实。
  • As an effective evolution strategy of angiosperms , double fertilization can enhance the survival of the embryos , seeds and seedlings in which endosperms play a key role in the development of seeds and embryos
    摘要双受精是被子植物的一个有效的进化策略,增加了胚和种苗成活的机会,其中胚乳在胚以及种子发育中至关重要。
  • Among thein , 2 species and 1 species are respectively pteridophyta and gymmospermae . all the others are angiosperm . the number of genera and species amount to 97 . 27 % and 97 . 87 % of all the genera and species of the wetland
    其中蕨类植物2种,裸子植物1种,而被子植物的属数和种数分别占南大港湿地植物总属数和总种数的97 . 27和97 . 87 。
  • As a result , western liaoning province has become one of the most important areas in the world for the study on the origin of birds , dinosaur evolution , and the early evolution and radiation of birds , mammal and angiosperms
    我国辽西地区已经成为世界上研究鸟类起源,恐龙的进化,鸟类、哺乳动物以及被子植物的早期演化和辐射等最重要的地区之一。
  • The average number of alleles per locus ( a ) , percentage polymorphic loci ( p ) , observed heterozygosity ( ho ) and wright ' s fixation index ( f ) is 2 . 2 , 77 . 9 , 0 . 433 , - 0 . 138 , respectively . the species also had higher variation than that of the other woody angiosperms widespread . moreover , e . mollis has higher population genetic variation than that of 26 long - lived woody endemics with narrow geographic distributions
    Biosys - 2软件计算得知,在翅果油树种群中,每个位点等位基因的平均数a = 2 . 2 ,多态位点百分率p = 77 . 9 ,遗传多样性he = 0 . 375 ,遗传多样性水平明显高于蜂媒植物,而且也比其它的广布木本被子植物的遗传多样性水平为高。
  • For example , the basic angiosperm stem is vertical and elongated , but some cacti have swollen water - storing stems , while other xerophytic plants that have lost their leaves during the course of evolution have evolved flattened leaflike stems for photosynthesis , e . g . butcher ' s broom ( ruscus aculeatus )
    例如被子植物的茎是垂直的,伸长的,但一些仙人掌具有膨大的能够储水的茎,另一些旱生植物在进化的过程中失去了叶子,但又发展为利用扁平叶状的茎来进行光合作用(假叶树) 。
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