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A dioecious flowering plant prevents bot...

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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  17. Which of the following has proved helpful in preserving pollen as fos...

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  18. Persistent nucellus in the seed is known as

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  19. What is the fate of the male gametes discharged in the synergid

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  20. Which one of the following statements regard- ing post-fertilization d...

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