生物体的结构与功能是相适应的有关这一结论的下列例证中不正确的是 A .根尖成熟区生有大量的根毛适于根吸收水分 b .毛细血管的管壁非常薄 Template




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tomski生物体的结构与功能是相适应的有关这一结论的下列例证中不正确的是 a .根尖成熟区生有大量的根毛适于根吸收水分 coloring