Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS
हिन्दीGiven below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In many water-pollinated submerged seagrasses, pollen grains are protected from wetting by a mucilaginous covering. Reason (R): Pollen grains of all water-pollinated plants have a thick exine layer made of sporopollenin that dissolves instantly in water. In the light of the above statements, choose the correct answer:
Correct answer · Option 3
is true but (R) is false
Explanation
Sporopollenin is the most resistant organic material known and does not dissolve in water. Assertion is true as NCERT states water-pollinated pollens are protected from wetting by a mucilaginous covering.