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单词 embryo sac
释义
embryo sac
  • 简明释义
  • [植] 胚囊
  • 网络释义
  • 1

    ?胚乳囊

    胚乳囊

短语
  • 双语例句
  • 1
    Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.
    大孢子四分体为线形,合点端功能大孢子发育成为蓼型胚囊。
  • 2
    A mature embryo sac is composed of egg apparatuses (two synergids and one egg cell), central cells and three antipodal cells.
    成熟胚囊包含卵器(由两个助细胞、一个卵细胞组成),中央细胞及三个反足细胞。
  • 3
    TyPes of endosPerm and embryo sac and structural feature of susPensor were also discussed.
    还对沙打旺胚柄的构造特点,胚乳和胚囊的类型等进行了讨论。
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更新时间:2025/8/6 13:38:41