The exine is made up of sporopollenin, which is one of the most resistant organic material. The in tine layer is made up of cellulose and pectin materials.The exine is hard and hence protects the pollen grains during adverse conditions.
The exine is made up of sporopollenin, which is one of the most resistant organic material. The in tine layer is made up of cellulose and pectin materials.The exine is hard and hence protects the pollen grains during adverse conditions.