The apical cell and basal cell act as the ancestor cells of frond and rhizoid.
两个细胞分别成为叶片和
根
祖细胞。
根
, 顶
;
膜;
;
;
;
,背侧
;
;The apical cell and basal cell act as the ancestor cells of frond and rhizoid.
两个细胞分别成为叶片和
根
祖细胞。
Stem with much reduced leaf blades that function as rhizoids below ground, with or without tubers or rhizomes.
在地下面,起
根
作用
茎具非常退化叶片,有或没有块茎或根状茎。
Rhizoid A unicellular rootlike structure found in certain algae and in the gametophyte generation of the bryophytes and some ferns.
在一些藻类、苔藓
和裸

配
体中存在
由单个细胞形成
类似根
结构。
The effects of different concentrations of arsenic on spore germination and rhizoid and prothallium growth of Pteris vittata under aseptic condition were studied.
研究无菌条件下不同浓度砷对蜈蚣草
孢
萌发、
根和原叶体
长发育
影响。
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