Multiple choice

Which of the following is the most resistant biological material?

  1. Lignin

  2. Hemicellulose

  3. Sporopollenin

  4. Chitin

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sporopollenin is a highly resistant organic polymer found in the outer layer (exine) of pollen grains. It is extremely stable and resistant to chemical and biological degradation, which allows pollen to be preserved in the fossil record for millions of years.

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