Question

Name the organic materials the exine and intine of an angiosperm pollen grain are made up of. Explain the role of exine.

Answer 1

• Exine is made up of sporopollenin and intine is made up of pectin and cellulose.
• The exine provides protection to the pollen grains; the sporopollenin of exine is one of the most resistant organic material which can withstand very high temperature and strong acids and alkalies.