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.