Unisexuality of flowers prevents

  • [AIPMT 2008]
  • A

    geitonogamy, but not xenogamy

  • B

    autogamy and geitonogamy

  • C

    autogamy, but not geitonogamy

  • D

    both geitonogamy and xenogamy.

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Does self incompatibility impose any restrictions on autogamy ? Give reasons and suggest the method of pollination in such plants.

Flower in which only one set of essential organ is present are said to be

  • [AIPMT 2004]

Give scientific reasons : Outbreeding devices increase fertility.

The phenomenon in which, anther and stigma grow and mature at same time is called