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A dioecious flowering plant prevents both (a) autogamy and xenogamy

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A dioecious flowering plant prevents both 

(a) autogamy and xenogamy 

(b) autogamy and geitonogamy 

(c) geitonogamy and xenogamy 

(d) cleistogamy and xenogamy

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1 Answer

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Best answer

Correct option (b) autogamy and geitonogamy 

Explanation

Dioecious flowering plants contain unisexual flower. In dioecious condition two types of unisexual flowers occur on different plants. 

Hence, it does not favour autogamy and geitonogamy because autogamy takes place in bisexual flowers and geitonogamy take place between different flower of the same plant.

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