Biologically,the most resistant plant materia | vedclass

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(A) The exine of the pollen grain is composed of $Sporopollenin$. $Sporopollenin$ is one of the most resistant organic materials known. It can withsta

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Sporopollenin

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(A) The exine of the pollen grain is composed of $Sporopollenin$. $Sporopollenin$ is one of the most resistant organic materials known. It can withstand high temperatures,strong acids,and alkali. No enzyme that degrades $Sporopollenin$ is known to date. Due to this property,pollen grains are well-preserved as fossils.

Biologically,the most resistant plant material is:

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