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Flowering plants have developed many dev...

Flowering plants have developed many devices to discourage self-pollination and to encourage cross-pollination. Explain three such devices.

Text Solution

Verified by Experts

See Q.11, Set-II., Outside Delhi-2015. and see also for third devices :
The third device to prevent self pollination is self-incompatibility. Its is a genetic mechanism and prevents self-pollen from fertilising the ovules by preventing pollen germination or pollen tube growth in the pistil.
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Mention various devices to discourage self pollination and encourage cross pollination in flowering plants.

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Knowledge Check

  • Flowering plants have developed many devices to discourage self - pollination and to encourage cross - pollination except

    A
    Dicliny
    B
    Dichogamy
    C
    Homogamy
    D
    Self Incompatibility

  • The devices to discourage self pollination are

    A
    pollen release and stigma receptivity is not syncronised
    B
    anther and stigma are placed at different position
    C
    rejection of pollen by stigma of the same flowers
    D
    all the these

  • Flowering plants have developed certain outbredding devices to discourage self-pollination and encourage cross-pollination. One of these is not an examples of such outbreeding device.

    A
    Dicliny
    B
    Dichongamy
    C
    Herkogamy
    D
    Cleistogamy

    • Similar Questions

    Explore conceptually related problems

    Differentiate between self-pollination and cross-pollination.

    Explain the difference between self-pollination and cross-pollination.

    Assertion : Flowering plants have developed many out breeding devices to discourage self-pollination and to encourage cross-pollination. Reason : Continued self-pollination result in ibreeding depression.

    Flowering plants have evolved outbreeding devices because

    Device for self - pollination is :

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