下图是研究植物�性运动的实验示意图该实验结果不能说明 A.产生生长素的部位是根尖和茎尖b.生长素对植物生长的作用具有两重性c.根和茎的�性 Template




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tomski下图是研究植物�性运动的实验示意图该实验结果不能说明 a.产生生长素的部位是根尖和茎尖b.生长素对植物生长的作用具有两重性c.根和茎的�性 coloring