不是每一朵花都能结出果实,能结出果实的花一定( ) ①长有雌蕊

不是每一朵花都能结出果实,能结出果实的花一定(  )

长有雌蕊和雄蕊 长有雌蕊  经历了自花传粉  经历了传粉  经历了受精.

答案

C

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