archegonia

archegonia

美 [ɑrtʃɪ'ɡoʊnɪə] 　英 [ɑ:tʃɪ'ɡəʊnɪə]

• n.造卵器
• 网络颈卵器；藏卵器

词形变化

复数：archegonia  

英汉解释

n.

1. 造卵器

英英解释

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 .

许多林木树种都有颈卵器，受精以后便产生许多原胚。

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

通过雌株末梢的纵切面所现出的几个瓶状的颈卵器，这就是雌性生殖器官。

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

除了买麻藤属和百岁兰属以外大多数裸子植物还保留有颈卵器。

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

（苔藓）主干顶端有颈卵器。

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

原叶体受精后幼胚突破颈卵器生长。

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

成熟的颈卵器含有颈细胞、腹沟细胞和卵细胞，但颈细胞和腹沟细胞已经退化。

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。