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Mention two strategies evolved to preven...

Mention two strategies evolved to prevent self -pollination in flowers .

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(i) Dichogamy : Maturation of anther and stigma of a flower at different times . Therefore self pollination is not possible in bisexual flowers .
(ii) Dicliny : (unisexually ) . The stamens and carpels occur in different flowers .
Self sterility : The pollen grains of a bisexual flower are not able to develop its growth on the stigma of the same flower .
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