Question

One of the most resistant biological material present in the exine of pollen grain is

Answer 1

Explanation:

sporopollenin

The exine of the pollen grains consist most resistant biological material known as sporopollenin. It is resistant to both microbial and chemical decomposition by which it preserves pollen grains during fossilaization. So, the correct option is 'Sporopollenin'.

Answer 2

Answer:

Sporopollenin.......✔