在根尖的结构中能够吸收水分和无机盐的主要部位是 A.根冠 B.分生区 C.伸长区 D.根毛区——青夏教育精英家教�—— Template




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tomski在根尖的结构中能够吸收水分和无机盐的主要部位是 a.根冠 b.分生区 coloring