Question

What is the difference between exine and intine

Answer 1

1. EXINE is the hard outer layer of pollen grain.
2. It is made up of sporopollenin which is one of the most resistant organic material known.

1.INTINE is the inner wall of the pollen grain.
2. It is thin and continous layer made up of cellulose and pectin.

Answer 2

Answer:

The pollen grain is made up of two layer exine and intine. Exine constitutes the hard outer layer, which is made up of sporopollenin, which is the most resistant material to be known. And intine is the thin inner layer of the pollen grain, which is made up of cellulose and pectin. It is thin as compared to exine.

Due to the presence of sporopollenin in the exine, it can withstand harsh conditions such as high temperature and strong acid and alkali.