3. Name the organic materials, the exine and intine of an angiosperm pollen grain are made up
of. Explain the role of exine.
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exine of pollen grain is made up of sporopollenin which is hard and can survive in extreme alkali conditions.
the under layer intine is made of pectin and cellulose
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exine is made up of sporopollenin and intine is made up of cellulose...
role of exine: protection of pollen from physiological conditions
Explanation:
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