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Which of the following is highly resistant to enzyme action?

  1. A
    Leaf cuticle
  2. B
    Cork
  3. C
    Wood fibre
  4. D
    Pollen exine

Solution & Step-by-step Explanation

The exine (outer layer) of a pollen grain is composed of sporopollenin. This is one of the most resistant organic materials known, capable of withstanding high temperatures, strong acids, alkalis, and all known enzymes.

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Which of the following is highly resistant to enzyme action?
A
Leaf cuticle
B
Cork
C
Wood fibre
D
Pollen exine

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