Which idea is useful for understanding longitudinal valley forms like Doons in the Himalayan region?
Answer and explanation
Correct answer: Depositional and structural valleys between parallel ranges
The correct answer is A because a Doon is a longitudinal valley lying between broadly parallel Himalayan ranges, especially between the Shiwalik range and the Lesser or Middle Himalaya. Its form reflects both the structural arrangement of the folded mountains and the accumulation of sediments in the intervening depression. Dehradun is a familiar example of this type of valley. Coral-reef deposition belongs to marine coastal environments, Deccan lava steps describe basaltic plateau relief, and Thar sand dunes are wind-built desert landforms. Therefore, only option A explains the location and origin of Doon valleys.
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What is the correct answer to this question?
Depositional and structural valleys between parallel ranges
Why is this the correct answer?
The correct answer is A because a Doon is a longitudinal valley lying between broadly parallel Himalayan ranges, especially between the Shiwalik range and the Lesser or Middle Himalaya. Its form reflects both the structural arrangement of the folded mountains and the accumulation of sediments in the intervening depression. Dehradun is a familiar example of this type of valley. Coral-reef deposition belongs to marine coastal environments, Deccan lava steps describe basaltic plateau relief, and Thar sand dunes are wind-built desert landforms. Therefore, only option A explains the location and origin of Doon valleys.
Which subject and chapter does this question cover?
This is a Class 10 General Knowledge question. Chapter: Indian Geography. Topic: Mountains and Plateaus of India.
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