Indusium The flap of tissue, derived from the placenta, that encloses the developing sporangia in the sorus of a fern.
是一种起源于胎座(应为叶表皮译者注)的瓣片状,盖在蕨类植物孢子群中正在发育的孢子上。
Indusium The flap of tissue, derived from the placenta, that encloses the developing sporangia in the sorus of a fern.
是一种起源于胎座(应为叶表皮译者注)的瓣片状,盖在蕨类植物孢子群中正在发育的孢子上。
There are a lot of sporule mother cells in every sporangium, they are respective via meiosis hind, produce the sporule of 4 monoploid.
每个孢子中有许多小孢子母细胞,它们减数分裂后,产生四个单倍体的小孢子。
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