Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R): Assertion (A): Pollen grains can be well preserved as fossils for millions of years. Reason (R): The outer wall layer exine is made of sporopollenin, which is impervious to strong acids, alkali, and high temperatures, and no known enzyme degrades it. In the light of the above statements, choose the correct answer:

1. Both (A) and (R) are true and (R) is the correct explanation of (A)
2. Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
3. is true but (R) is false
4. is false but (R) is true