Which one of the following is an example of cleistogamy

  • A

    Sunflower

  • B

    Vallisneria

  • C

    Commelina

  • D

    Calatropis

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In plants, in nature, autogamy is avoided since the seeds produced

Self-incompatibility is a device for

$I$. Ensuring cross-pollination

$II$. Preventing self-pollination

$III$. Ensuring self-fertilisation

$IV$. Genetic control for self-fertilisation

Choose the correct statements from those given above

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