给未受粉的番茄雌蕊柱头涂上一定浓度的生长素溶液,可获得无子番

给未受粉的番茄雌蕊柱头涂上一定浓度的生长素溶液,可获得无子番茄。这个现象说明

A.果实发育与受精作用有关         B.果实发育与种子形成有关

C.果实发育需要生长素             D.生长素抑制了种子生长

答案

C

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