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One of the most resistant biological material present in the exine of pollen grain is
  • a)
    pectocellulose
  • b)
    sporopollenin
  • c)
    suberin
  • d)
    cellulose
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
One of the most resistant biological material present in the exine of ...
Outer layer (exine) of pollen grain is made of a highly resistant substance called sporopollenin. Sporopollenin is not degraded by any enzyme. It is not affected by high temperature, strong acid or strong alkali. Because of sporopollenin, pollen grains are well preserved as fossils.
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