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1·The mature embryo sac has seven cells.

成熟胚囊内具七个细胞。

2·How does macrospore developed to embryo sac?

大孢子如何发育成胚囊？

3·The developed embryo sac has 7 cells containing 8 nuclei.

成熟胚囊为8核组成的7细胞胚囊。

4·All nucellar cells disappear, when an embryo sac is ripe.

属薄珠心，胚囊形成时珠心细胞全部消失。

5·Chalazal end of mature embryo sac is narrow and elongated.

成熟胚囊的合点端狭长。

6·The pollen tube entered into the embryo sac via one synergid.

花粉管经由一个助细胞进入胚囊；

7·There are 4 ~ 11 antipodal cells in embryo sac of Drusa type.

德鲁撒型变型胚囊中具有4 ~ 11个反足细胞。

8·Abnormal development was observed at tetrad and mature embryo sac.

在四分体和成熟胚囊时期观察到了异常发育现象。

9·The development of the embryo sac conformed to the Polygonum type.

胚的发育类型为柳叶菜型，核型胚乳。

10·These abnormalities would cause the abnormal structure of mature embryo sac.

这些异常可能最终导致多种结构异常成熟胚囊的形成。

胚囊

1·Abnormal development was observed at tetrad and mature embryo sac.

在四分体和成熟胚囊时期观察到了异常发育现象。

2·In present work, the development of anther, formation of pollen grain and development of ovule and formation of embryo sac in Ramie were observed.

本工作对苎麻花药的发育和花粉粒的形成、胚珠的发育和胚囊的形成进行了观察。

3·How does macrospore developed to embryo sac?

大孢子如何发育成胚囊？

4·The mature embryo sac has seven cells.

成熟胚囊内具七个细胞。