What are germ pores ? from Biology Sexual Reproduction in f
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    Sexual Reproduction in flowering Plants

    Multiple Choice QuestionsShort Answer Type

    21. Define xenogamy ?
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    22. What is the chemical nature of outer covering of pollen ?
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    Multiple Choice QuestionsOne Word Answers

    23. Give an example of anemophilous flower.
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    Multiple Choice QuestionsShort Answer Type

    24. What is the fate of egg cell in an embryo.
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    25. What is flower ?
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    26. Give examples of dioecious plants.
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    27. What are dithecous anther ?
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    28.  What are germ pores ?

    Prominent apertures present in exine of pollen grain where sporopollenin is absent.
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    29. How many nuclei are present in mature pollen tube in angiospermic plant just before fertilization ?
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    30. What is the function of pollen tube ?
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