One of the most resistant known biological material is __________.

Lignin

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Hemicellulose

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Sporopollenin

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Lignocellulose

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Solution

The correct option is C Sporopollenin
The exine of the pollen grains consist most resistant biological material known as sporopollenin. It is resistant to both microbial and chemical decomposition by which it preserves pollen grains during fossilaization.
So, the correct option is 'Sporopollenin'.

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