A) homopolysaccharide
B) fatty substance
C) protein
D) heteropolysaccharide
Correct Answer: B
Solution :
Sporopollenin is biologically most resistant organic material (fatty substance) found in the exine (outer wall) of spores and pollen grains. It consists of complex polymers with an emperical formula (\[{{C}_{90}}{{H}_{142}}{{O}_{36}}\]), formed by oxidative polymerization of carotenoids and their esters.
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