A dioecious flowering plant prevents both
Option 1 : Cleistogamy and xenogamy
Option 2 : Autogamy and xenogamy
Option 3 : Geitonogamy and xenogamy
Option 4 : Autogamy and geitonogamy
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A dioecious flowering plant prevents both
Option 1 : Cleistogamy and xenogamy
Option 2 : Autogamy and xenogamy
Option 3 : Geitonogamy and xenogamy
Option 4 : Autogamy and geitonogamy