Assertion: In the states of Punjab, Haryana and Tamil Nadu, almost the entire land under rice cultivation is irrigated.
Reasoning: Punjab and Haryana are not traditional rice growing areas.

Both Assertion (A) and reasoning (R) are correct and but R is not the correct explanation of A.

The correct answer is Option 2: Both Assertion (A) and reasoning (R) are correct and but R is not the correct explanation of A.

Assertion: In the states of Punjab, Haryana and Tamil Nadu, almost the entire land under rice cultivation is irrigated. This is correct. In states like Punjab, Haryana, and Tamil Nadu, rice is grown almost entirely under irrigated conditions. Because rice is a water-intensive crop, these regions rely heavily on canal systems and tube wells to meet the water requirements that rainfall alone cannot provide.

Reasoning: Punjab and Haryana are not traditional rice growing areas.This is also correct. Rice cultivation in the irrigated areas of Punjab and Haryana was introduced in 1970s following the Green Revolution.

Why R is NOT the correct explanation of A

While both statements are factually accurate, the reason why the land is irrigated (A) is not simply because the areas are non-traditional (R). The actual "explanation" for the high irrigation in these states is the climatic necessity: Rice requires high humidity and standing water, which these regions lack naturally. The reasoning (R) provides historical context, but it doesn't explain the necessity for irrigation today.

NCERT: "The yield level of rice is high in Punjab, Tamil Nadu, Haryana, Andhra Pradesh, Telangana, West Bengal and Kerala. In the first four of these states almost the entire land under rice cultivation is irrigated. Punjab and Haryana are not traditional rice growing areas. Rice cultivation in the irrigated areas of Punjab and Haryana was introduced in 1970s following the Green Revolution."