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  • Advantage of cleistogamy is Option: 1 higher genetic variability  Option: 2</strong

Advantage of cleistogamy is 

Option: 1

higher genetic variability

 


Option: 2

more vigorous offspring


Option: 3

no dependence on pollinators


Option: 4

viviparity


Answers (1)

best_answer

As we have learnt:

Autogamy:
  • In this type of self-pollination, the transfer of pollen grains from the anther to the stigma takes place within the same flower.
  • It is possible when both the anther and stigma are closely placed or there is a synchronization between pollen release and stigma receptivity.
  • It occurs in the following three methods:
    • Homogamy or Chasmogamy: Chasmogamous flowers are open flowers and they perform autogamy when brought close together by means of folding or bending, for example, potato, sunflower, etc.
    • Cleistogamy: In some plants, flowers never open up, these are called cleistogamous flowers. The anthers dehisce inside these closed flowers to ensure pollination. Thus, cleistogamous flowers are invariably autogamous as there is no chance of cross-pollination. These flowers produce assured seed sets even in the absence of pollinators, e.g., Oxalis, Viola, etc.
    • Bud Pollination: The pollination taking place when the flower is in the bud condition is called as the bud pollination. It usually occurs in the flowers in which the stigma and the pollen grains mature or ripens even before the opening of the bud. Example Pea, Grass etc.

- Therefore:

  • Cleistogamy: In some plants, flowers never open up, these are called cleistogamous flowers. The anthers dehisce inside these closed flowers to ensure pollination. Thus, cleistogamous flowers are invariably autogamous as there is no chance of cross-pollination. These flowers produce assured seed sets even in the absence of pollinators, e.g., Oxalis, Viola, etc.

Hence, the correct answer is option c.

Posted by

Shailly goel

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