The functional role of sporopollenin is primarily to
a) comprise spore surface structures that catch the wind and assist in spore dispersal.
b) reduce dehydration.
c) make spores less dense and able to disperse more readily.
d) repel toxic chemicals.
e) provide nutrients to spores.

Answer;

B) reduce dehydration.

Explanation;Sporopollenins are the chemical component that make up the outer wall of pollen grains, spores and many related microorganisms. It is one of the most chemically inert biological polymers. It is a major component of the tough outer walls of plant spores and pollen grains. It is chemically very stable and is usually well preserved in soils and sediments. The functional role of sporopollenin is primarily to reduce dehydration.