Assertion (A): Wind patterns are clockwise in the northern hemisphere and anticlockwise in the southern hemisphere. Reason (R): The directions of wind patterns in the northern and the southern hemisphere are governed by the Coriolis effect.

1. Assertion (A) is false. Due to the Coriolis effect, large-scale wind patterns (like around high and low-pressure systems) deflect to the right in the northern hemisphere (leading to anti-clockwise flow around lows and clockwise flow around highs) and to the left in the southern hemisphere (leading to clockwise flow around lows and anti-clockwise flow around highs). The statement incorrectly reverses the directions (clockwise in North, anti-clockwise in South generally refers to flow around *high-pressure* systems, not all patterns). 2. Reason (R) is true. The directions of wind patterns in the northern and southern hemispheres are indeed governed by the Coriolis effect, which arises from the Earth's rotation. 3. Since A is false and R is true, the correct option is (D).