Q38 / 200 · NEET 2022 (Phase 1) · Botany

Given below are two statements :
Statement I: Cleistogamous flowers are invariably autogamous
Statement II: Cleistogamy is disadvantageous as there is no chance for cross pollination
In the light of the above statements, choose the correct answer from the options given below :

  • A
    Both Statement I and Statement II are incorrect
  • B
    Statement I is correct but Statement II is incorrect
  • C
    Statement I is incorrect but Statement II is correct
  • Correct answer
    D
    Both Statement I and Statement II are correct

Solution

Cleistogamous flowers mean anther and stigma present close each other in the closed flower. They are bisexual which cannot open even at maturity and thus self-pollination occurs. For this reason these type of flowers are invariably autogamous. Cleistogamous flowers undergo self-pollination only, which reduces the chances of variation and evolution of genetically superior progeny.

Hence, the correct answer is option: 'D'.

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