Explanations:The Aravalli Range is a significant geographical feature in India, particularly in the state of Rajasthan. It is a mountain range that extends from the northwestern part of the country to the central part, running through Rajasthan and parts of Gujarat. The Aravalli Range is an important natural barrier that influences the climate of Rajasthan by blocking the South-West monsoon winds.
The South-West monsoon winds are a crucial source of rainfall for much of India, bringing moisture from the Arabian Sea. However, the Aravalli Range acts as a physical barrier that prevents these winds from reaching the eastern part of Rajasthan. As a result, the region to the east of the Aravalli Range, including the Thar Desert, receives very little rainfall, leading to a predominantly arid climate.
Understanding the role of mountain ranges in blocking monsoon winds is essential for comprehending the climate patterns in different parts of India. The Aravalli Range is particularly significant in this context because it is the primary barrier that affects the monsoon winds reaching Rajasthan. Other mountain ranges, such as the Western Ghats, Vindhya Ranges, and Kasi Garo Hills, are located in different parts of India and do not have a direct impact on the monsoon winds reaching Rajasthan.
The Aravalli Range is not only a geographical barrier but also a significant geological feature. It is one of the oldest mountain ranges in India, formed over 1.8 billion years ago. The range is composed of metamorphic rocks and has a diverse ecosystem, including various flora and fauna. The presence of the Aravalli Range has shaped the landscape and climate of Rajasthan, making it a unique region in terms of its geography and ecology.
In summary, the Aravalli Range is the correct answer because it is the mountain range that blocks the South-West monsoon winds from reaching Rajasthan, leading to a drier climate in the region. This geographical feature is crucial for understanding the climate patterns and ecological conditions in Rajasthan.