Q. Which of the following plant products is the hardest?
A) Lignin
B) Cutin
C) Suberin
D) Sporopollenin
Explanation
Sporopollenin is a polymer, tougher than lignin but with similar properties, composed chiefly of carotenoids, makes the exine of spores and pollen grains of plants providing resistance to biodegradation. It is the hardest plant product.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.