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Sexual Reproduction in Flowering Plants question

2008 · Q16
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Sexual Reproduction in Flowering Plants question

2008 · Q16

NEETBiologySexual Reproduction in Flowering PlantsMCQ+4 / −1
Which one of the following is resistant to enzyme action?
  1. A
    Pollen exine
  2. B
    Leaf cuticle
  3. C
    Cork
  4. D
    Wood fibre
View written solutionFree

Correct answer: A

Pollen exine is resistant to enzyme action. The hard outer layer called the exine is made up of sporopollenin which is one of the most resistant organic material known. It can withstand high temperatures and strong acids and alkali. No enzymes that degrade sporopollenin are so far known.

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