Biology · BIOMOLECULES

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Starch gives a characteristic blue colour with iodine (I2), but pure cellulose does not. Reason (R): Starch forms helical secondary structures that can trap iodine molecules, whereas cellulose lacks complex helices and cannot hold I2. In the light of the above statements, choose the correct answer from the options given below:

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. (A) is true but (R) is false.
4. (A) is false but (R) is true.