当我们把一粒玫瑰花籽植入土壤里时，我们注意到它是微小的，但是我们并不苛责它是“无根无茎的”。
When we plant a rose in earth, we notice it is small but we don't criticize it as "rootless and stemless".
那些可进行光合作用和所维生的细胞呈线形结构，但原植体则无根、茎、叶的分化，无输导组织。
The photosynthetic and supportive cells tend to be organized linearly, but a thallus lacks such differentiated specialized structures as stem, leaves, and conducting tissue.
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