下图是某研究小组围绕扦插枝条生根进行的探究实验s为插条的形态学上端x为插条的形态学下端下列叙述正确的是 A.生长素的化学本质是蛋白质 B Template




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tomski下图是某研究小组围绕扦插枝条生根进行的探究实验s为插条的形态学上端x为插条的形态学下端下列叙述正确的是 a.生长素的化学本质是蛋白质 b coloring