从下图所示的实验中可以直接得出的结论是 A.生长素能促进胚轴切段生长b.单侧光照引起生长素分布不均匀c.生长素只能由形态学上端�下端 Template




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tomski从下图所示的实验中可以直接得出的结论是 a.生长素能促进胚轴切段生长b.单侧光照引起生长素分布不均匀c.生长素只能由形态学上端�下端 coloring