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 Consider the following pairs : Features River Stage
1. Gorge - Youth
2. Meander - Middle
3. Oxbow lake - Old
How many pairs given above is/are correctly matched ?
  • a)
    Only one pair
  • b)
    Only two pairs
  • c)
    All three pairs
  • d)
    None of the pairs 
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the following pairs : Features River Stage1. Gorge - Youth2. ...
 Upper, middle and lower are the three courses into which a river valley is divided. Young rivers ( (A) denotes the below picture for the formation of the Young river) close to their source tend to be fast-flowing, high-energy environments with rapid downward and headward erosion, despite the hardness of the rock over which they may flow. The land features carved by a river in its upper course are as follows:
  • Gorges,
  • Canyons,
  • V' shaped valleys,
  • Rapids,
  • Cataracts, and
  • Waterfalls A gorge is a narrow valley with steep, rocky walls between hills or mountains.
The term comes from the French word gorge, which means throat or neck. So, Pair 1 is correct.
Mature rivers or Middle ( (B) denotes the above picture for mature river formation ) are lower-energy systems. Erosion takes place outside bends, creating looping meanders in the soft alluvium of the river plain. Deposition occurs on the inside of the bends and the river bed. Some of the land features formed by a river in its middle course are alluvial fans and meanders. A meander is a bend in the course of a river channel. A meander is formed in the middle course of a river; when the river leaves the mountains, it encounters a sudden slope break and slows down. The plains are broad and gentle. So the river has more time to amble away down to the sea. So, Pair 2 is correct.
Oxbow lakes are formed when the neck of a looping meander is broken through, usually during times of flood. They are U-shaped or curved bends in a river that are cut off from the main river flow, forming a lake. In the lower course of the river, meanders become much more pronounced. The outer or concave bank is so rapidly eroded that the meander becomes almost a complete circle. A time comes when the river cuts through the narrow neck of the loop. The meander, now cut off from the mainstream, takes the form of an oxbow lake. In the lower course or the stage of old age, the land features produced by the river are meanders, flood plains, braided steam, oxbow lakes, deltas and estuaries. So, Pair 3 is correct.
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Most Upvoted Answer
Consider the following pairs : Features River Stage1. Gorge - Youth2. ...
Correctly Matched Features:
- Gorge - Youth: A gorge is a narrow valley with steep, rocky walls, typically formed by a river. In the youth stage of a river, it is more energetic and has more erosive power, creating features like gorges.
- Meander - Middle: Meanders are bends in a river that form in the middle stage of a river's development. The middle stage is characterized by the river having a more winding path as it erodes sideways.
- Oxbow lake - Old: An oxbow lake is a U-shaped body of water that forms when a meander is cut off from the main river, typically occurring in the old stage of a river when it has meandered extensively.
Therefore, all three pairs given above are correctly matched. Each feature corresponds to the appropriate stage in a river's development, showcasing the different characteristics and landforms associated with each stage.
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Consider the following pairs : Features River Stage1. Gorge - Youth2. Meander - Middle3. Oxbow lake - OldHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)All three pairsd)None of the pairsCorrect answer is option 'C'. Can you explain this answer?
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Consider the following pairs : Features River Stage1. Gorge - Youth2. Meander - Middle3. Oxbow lake - OldHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)All three pairsd)None of the pairsCorrect answer is option 'C'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following pairs : Features River Stage1. Gorge - Youth2. Meander - Middle3. Oxbow lake - OldHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)All three pairsd)None of the pairsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following pairs : Features River Stage1. Gorge - Youth2. Meander - Middle3. Oxbow lake - OldHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)All three pairsd)None of the pairsCorrect answer is option 'C'. Can you explain this answer?.
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