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Sexual Reproduction in Flowering Plants question

2021 · Q34
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Sexual Reproduction in Flowering Plants question

2021 · Q34

NEETBiologySexual Reproduction in Flowering PlantsMCQ+4 / −1
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
  1. A
    Rosaceae : Leguminosae
  2. B
    Poaceae : Rosaceae
  3. C
    Poaceae : Leguminosae
  4. D
    Poaceae : Solanaceae
View written solutionFree

Correct answer: A

In some members of Rosaceae, Leguminosae and Solanaceae pollen grains maintain viability for a month due to sporopollenin.

The outer wall or exine of pollen grains contains sporopollenin. It is one of the most resistant organic compounds known. It protects pollen grains from external factors such as temperature, acid, alkali, etc. because of sporopollenin, pollen grains are preserved as fossils.

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