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Biology · SEXUAL REPRODUCTION IN FLOWERING PLANTS

हिन्दी

Given 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:

  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

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.
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