Paper 1 · People, Development and Environment
Assertion (A): Hygroscopic and combined water are of no use to plants. Reason (R): Some water is held in an extremely thin, tightly held film around soil particles, called hygroscopic water, and a small portion of soil water is chemically bound with soil materials, called combined water. Choose the correct answer.
ABoth (A) and (R) are true and (R) is the correct explanation of (A) ✓ Correct
BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
C(A) is true, but (R) is false
D(A) is false, but (R) is true
Correct answer: (A) Both (A) and (R) are true and (R) is the correct explanation of (A) — Both (A) and (R) are true, and (R) correctly explains (A), so that is the answer.
Explanation
★Both (A) and (R) are true, and (R) correctly explains (A), so that is the answer.
★The assertion says hygroscopic and combined water are of no use to plants.
★The reason explains that these waters are tightly held or chemically bound to soil.
★Because they are held so firmly, plant roots cannot draw them.
★So the reason explains why these waters are unavailable to plants.
★So both are true and (R) is the correct explanation of (A).
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