The hard outer layer called the _________________ is made up of
sporopollenin which is one of the most resistant organic material
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Answer:
exine
Explanation:
Pollen grain has a two-layered wall i.e., exine and intine. The hard outer layer of pollens, named exine, is made of sporopollenin. It is one of the most resistant organic materials known. It can withstand high temperature and strong acids and alkali.
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Answered by
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Pollen grain has a two-layered wall i.e., exine and intine. The hard outer layer of pollens, named exine, is made of sporopollenin. It is one of the most resistant organic materials known. It can withstand high temperature and strong acids and alkali.
*Answer*- exine
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