藻类、菌类和地衣类植物合称低等植物。它们形态上无根、茎、叶分化,又称原植体植物;构造上一般无组织分化,有单细胞生殖器官,合子离开母体后发育,不形成胚,故又称无胚植物。
贫瘠的土地上首先长满了地衣这种低等植物,它们在裸露的岩石上生存。
First to colonize the barren land are the lowly lichens, surviving on bare rock.
你知道低等植物和高等植物的区别吗?
Do you know the difference between lower plants and higher plants?
并且比较了高等植物和低等植物胞间连丝的发生和次生变化。
Plasmodesmal origin and secondary modification are compared between higher plant and lower plant also.
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