archegonium

/ahr-ki-goh-nee-uhm/US // ˌɑr kɪˈgoʊ ni əm //UK // (ˌɑːkɪˈɡəʊnɪəm) //

弧菌素,拱形物,拱形物语,弧形体

Definitions

n.名词 noun

1
plural ar·che·go·ni·a [ahr-ki-goh-nee-uh]. /ˌɑr kɪˈgoʊ ni ə/. Botany.
- : the female reproductive organ in ferns, mosses, etc.

A single archegonium—later capsule—is found in each of the half-dozen involucres.
Throughout he compares the structure with the pistillum (archegonium) of Bryophyta.
The fertilized nucleus or germ-cell of the archegonium in Cryptogams, from which the new plant is directly developed.
The female organ (archegonium) and the cell which it produces are practically identical in both cases.
Spermatozoids are formed in the antheridium, and these enter the archegonium and fertilize the germ cell.