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Question

Which of the following plant product is the hardest

A
Lignin
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B
Cutin
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C
Suberin
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D
Sporopollenin
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Solution

The correct option is D Sporopollenin
Sporopollenin is a polymer, tougher than lignin but with similar properties, composed cheifly of carotenoids makes spores and pollen grains of plants resistant to biodegradation. It is the hardest plant product.

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