Bisexual flowers which never open,demonstrate

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(A) The condition where bisexual flowers do not open at all is known as $Cleistogamy$.In $Cleistogamous$ flowers,the anthers and stigma lie very close

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Cleistogamy

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(A) The condition where bisexual flowers do not open at all is known as $Cleistogamy$.In $Cleistogamous$ flowers,the anthers and stigma lie very close to each other. When anthers dehisce in the flower buds,pollen grains come in contact with the stigma to effect pollination.Thus,$Cleistogamous$ flowers are invariably $Autogamous$ as there is no chance of cross-pollination. Examples include $Commelina$ $benghalensis$,$Oxalis$,and $Viola$.

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