alleryThe hard outer wall of a pollen grain is made up of:
APectin
BCellulose
CSporopollenin
DLignin
Answer & Solution
Correct answer: C. Sporopollenin
The pollen **exine** is made of **sporopollenin** — one of the most resistant organic materials known, withstanding high temperatures, strong acids/alkalis, and no enzyme degrades it.
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