The photosynthetic product of fresh leaves and branches which were growing did not supply other tissue and position.

正在生长的嫩叶、嫩梢的光合产物不供给其它组织和部位。

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The photosynthetic and supportive cells tend to be organized linearly, but a thallus lacks such differentiated specialized structures as stem, leaves, and conducting tissue.

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。

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