Question

Identify the pair of wrong statements.
I. Intine of pollen grains is made up of sporopollenin.
II. Pollen grains are well preserved as fossils because of the presence of sporopollenin.
III. Enzymes can degrade the organic material of the pollen grain exine.
IV. Sporopollenin can withstand high temperature, strong acids and alkali.

• A. III, IV
• B. I, III
• C. I, II
• D. II, III

Answer 1

Answer: (B)

I, III

Sporopollenin is one of the most resistant organic material known. It can withstand high temperature, strong acid or alkali and is not degraded by enzymes. Because of the presence of sporopollenin, pollen grains are well preserved as fossils. It is present in exine (outer wall) of pollen grain. So option B is the answer.