UPSC Static Quiz – Geography : 1 May 2026

Solution: D

• Shelterbelts are broad, multi-row plantings of trees and shrubs strategically established to modify microclimates over large areas. They are commonly used to shield farms, settlements, and agricultural landscapes from strong winds, dust storms, and extreme climatic conditions.
• Windbreaks, in contrast, are relatively narrow linear barriers, typically consisting of one or two rows of trees or shrubs, and are designed to provide localized protection to specific plots, crops, or buildings.
• Statement 3 is also correct, particularly in the context of arid and semi-arid regions. By reducing wind speed near the ground, shelterbelts and windbreaks lower evapotranspiration rates, minimize soil erosion, and help conserve soil moisture. This enhances water-use efficiency, improves crop yields, and contributes to long-term land sustainability, making these structures important tools in climate-resilient agriculture and land management.

Solution: C

• Introduced by Dietrich Brandis (first Inspector General of Forests in India).
• Mechanism:The forest department wanted to plant valuable timber (Teak/Sal). They gave land to landless or shifting cultivators. The farmers cleared the scrub, planted the tree saplings, and were allowed to grow their own crops between the rows for 2-3 years.

Objective: It was a low-cost method for the government to raise plantations.

Solution: C

• Silvopastoral systems combine trees, forage crops, and livestock on the same land unit, aiming to enhance fodder availability, improve soil fertility, provide shade to animals, and diversify farm income.
• Agrisilvicultural systems involve the deliberate integration of woody perennials with annual or perennial agricultural crops, enabling efficient use of land, nutrients, and sunlight while improving resilience against climatic stress.
• Taungya is a well-established agroforestry practice, particularly in South and Southeast Asia, where farmers are allowed to cultivate agricultural crops between rows of newly planted forest trees during the early years of plantation establishment. This system benefits both farmers, through temporary crop yields, and forest departments, by reducing plantation establishment costs and improving seedling survival.

Solution: C

Jet streams are narrow bands of high-speed winds that play a critical role in global weather patterns, particularly due to their position in the upper troposphere at altitudes ranging from about 8 to 12 km above the Earth’s surface. These winds are significant because they can steer weather systems, including cyclones, across large distances. For instance, the movement and development of cyclones are influenced by the positioning of jet streams, particularly as they provide a steering mechanism for these large-scale weather systems. Therefore, statement 1 is correct.

Jet streams form at the boundaries of different temperature zones, typically between cold polar air masses and warmer tropical air masses. These zones are often associated with significant pressure differences, resulting in the formation of high-speed winds along these boundaries. This mechanism explains why jet streams play a role in the formation of weather fronts and systems, making statement 2 correct as well.

India’s monsoon, a critical climatic feature for the subcontinent, is influenced by both the sub-tropical westerly jet stream during the winter season and the equatorial easterly jet stream during the summer monsoon. The shifting of these jet streams in different seasons significantly impacts the weather patterns, particularly the onset and withdrawal of monsoons. Thus, statement 3 is also correct.

However, jet streams operate at much higher altitudes than 1-2 km; they typically blow at altitudes ranging from 8 to 12 km above the Earth’s surface. This makes statement 4 incorrect.

Solution: B

• The southwest monsoon contributes nearly three-fourths of India’s annual rainfall, making it the backbone of the country’s water availability, agriculture, and reservoir recharge. Hence, statement 1 is correct.
• Monsoonal rainfall is also vital for Kharif crops such as rice, maize, cotton, and pulses, which are sown with the onset of the monsoon and depend heavily on its timely arrival and adequate distribution; therefore, statement 3 is correct.
• Statement 2 is incorrect because, in general, the intensity of monsoon rainfall decreases with distance from the sea, as moisture-laden winds lose water vapour while moving inland, except in regions influenced by strong orographic effects such as the Western Ghats or the northeastern hills.
• Statement 4 is also incorrect because breaks in the monsoon are usually associated with the absence or weakening of monsoon troughs and depressions, not with cyclonic activity. In fact, cyclonic disturbances or monsoon depressions over the Bay of Bengal typically enhance rainfall over large parts of India rather than cause breaks.