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What are chasmogamous flowers? Can cross...

What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.

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Chasmogamous flowers are similar to other flowers with exposed anthers and stigma. Cleistogamous flowers remain closed so that cross-pollination does not occur. They never open and ensure self-pollination.
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What are chasmogamous flowers ? Can cross-pollination occur in cleistogamous flower ? Give reasons for your answer ?

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