Give a labelled diagram  showing A. Enlarged view of an
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    Sexual Reproduction in flowering Plants

    Multiple Choice QuestionsLong Answer Type

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    61.

    Give a labelled diagram  showing

    A. Enlarged view of an egg apparatus showing entry of pollen tube into a synergid.
    B. Discharge of male gametes into a synergid and the movements of the sperms, one into the egg and the other into the central cell

     (A) L.S. of pistil showing path of pollen tube growth ; enlarged view of an egg apparatus showing entry of pollen tube into a synergid.
     (B) Discharge of male gametes into a synergid and the movements of the sperms, one into the egg and the other into the central cell.

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    Multiple Choice QuestionsShort Answer Type

    62. Why is endosperm in angiospermic ovule considered as more efficient ?
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    63.  What are main functions of fruits ?
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    64. Explain the biological and economic importance of fruits.

     

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    65. What is fate of following in a mature fruits ?
    (a) Integument (b) Ovary wall (c) Egg cell (d) Secondary nucleus (e) Antipodal cells.
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    Multiple Choice QuestionsLong Answer Type

    66. Differentiate

    (a) hypocotyl and epicotyl

    (b) Coleoptile and coleorhiza

    (c) Integument and testa

    (d) Perisperm and pericarp.

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    Multiple Choice QuestionsShort Answer Type

    67. Why is apple called a false fruit ? Which part of flower form its fruit ?
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    68. If one can induce parthenocarpy, through the application of growth substances, which fruits you would select to induce parthenocarpy and why ?
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    69.  Explain the role of tapetum in the pollen grain wall formation.
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    70. What is apomixis ? Write its importance.
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