Multiple choice

Which among the following does not favour cross pollination?

  1. Herkogamy

  2. Heterostyly

  3. Self incompatibility

  4. Cleistogamy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Some plants never open to ensure complete self-pollination. This condition is called cleistogamy, e.g., Commelina bengalensis, Oxalis, Viola, etc.. The cleistogamous flowers are bisexual small, inconspicuous, colourless and do not secrete nectar.

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