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假根的祖细胞。

Stem with much reduced leaf blades that function as rhizoids below ground, with or without tubers or rhizomes.

地下面，起假根的作用的退化叶片，有或有块或根状。

Rhizoid A unicellular rootlike structure found in certain algae and in the gametophyte generation of the bryophytes and some ferns.

些藻类、苔藓植物和裸子植物配子体中存的由单个细胞形成的类似根的结构。

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的孢子萌发、假根和原叶体生长发育的影响。