Class 12th Biology 2012 Set2 Delhi Board Paper Solution
Question 18
Where is sporopollenin present in plants? State its significance with reference to its chemical nature.
Answer
Sporopollenin is present in exine of pollen grains in plants. It is one of the most resistant organic substances and can withstand high temperature, strong acids and alkali. No enzyme that degrades sporopollenin is so far known. This sporopollenin helps the pollen grain to be well preserved.
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