archegonia

archegonia

美 [ɑrt??'ɡo?n??] 　英 [ɑ:t??'ɡ??n??]

• n.造卵器
• 網絡頸卵器；藏卵器

詞形變化

復數：archegonia  

英漢解釋

n.

1. 造卵器

英英解釋

n.	1. the female reproductive organ of mosses, ferns, liverworts, and most gymnosperms. It contains a single egg cell.

例句

Many forest tree species have multiple archegonia which , after fertilization produce a number of proembryos .

許多林木樹種都有頸卵器，受精以后便產生許多原胚。

A similar section through the female plant reveals several bottle- shape archegonia , the female reproductory organs .

通過雌株末梢的縱切面所現出的幾個瓶狀的頸卵器，這就是雌性生殖器官。

Most gymnosperms retain archegonia except for the most advanced genera Gnetum and Welwitschia.

除了買麻藤屬和百歲蘭屬以外大多數裸子植物還保留有頸卵器。

(of mosses) having the archegonia at the top of the stem.

（苔蘚）主干頂端有頸卵器。

It can be observed that the embryos break through the archegonia after fertilization.

原葉體受精后幼胚突破頸卵器生長。

The mature archegonia contained neck cell, ventralcanal cell and egg cell, but neck cell and ventralcanal cell has degenerated.

成熟的頸卵器含有頸細胞、腹溝細胞和卵細胞，但頸細胞和腹溝細胞已經退化。

the female gametophyte is represented by the embryosac , the archegonia being absent

雌性配子體存在于胚囊中，頸卵器缺失。