Sexual Reproduction in Flowering Plants Question 29

29. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is :

[2012]

(a) Cuticle

(b) Sporopollenin

(c) Lignin

(d) Cellulose

Show Answer

Answer : b

Hints & Solutions

(b) Sporopollenin is fatty substance present in pollen wall and provides resistance against extremes conditions like high temperature, acid, bases.