Outer wall/exine of pollen grain is formed of

Exine of pollen grain is composed of

Exine of pollen grains is composed of

Exine of pollen grain is made up of

Exine of pollen grains is made up of

Exine of pollen grain in made up of

The exine of the pollen grain is composed of ______________.

(a) Name the organic material exine of the pollen grain is made up of. How is this material advantageous to pollen grain ? (b) Still it is observed that it does not form a continuous layer around the pollen grain. Give reason. (c) How are 'pollen banks' useful ?

(a) Name the organic material exine of the pollen grain is made up of. How is this material advantageous to pollen grain ? (b) Still it is observed that it does not form a continuous layer around the pollen grain. Give reason. (c) How are 'pollen banks' useful ?

Pollen grains are formed from