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(chǎn)生許多原胚.
辭典例句
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(xiàn)出的幾個瓶 狀 的頸卵器, 這就是雌性生殖器官.
辭典例句