Match List I with List II and select the correct answer using the code given below the Lists :
| List I (Geomorphic Agent) | List II (Feature) |
|---|---|
| A. Ground water | 1. Plunge pool |
| B. Running water | 2. Horns |
| C. Glacier | 3. Playas |
| D. Wind | 4. Lapies |
Code :
4 1 2 3
3 2 1 4
3 1 2 4
4 2 1 3
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2016
– Ground water (A) is a significant agent in karst landscapes, forming features like sinkholes, caves, and Lapies (also known as Karren), which are solutional features on limestone or dolomite surfaces. So, A-4.
– Running water (B), particularly rivers, is responsible for erosional features like valleys, canyons, and waterfalls. Plunge pools are common erosional features found at the base of waterfalls, carved by the impact and turbulence of falling water. So, B-1.
– Glacier (C) is a powerful erosional and depositional agent in high latitudes and altitudes. Glacial erosion shapes mountains, creating features like cirques, arêtes, and sharp, pyramidal peaks called Horns (or pyramidal peaks) formed when several cirques meet. So, C-2.
– Wind (D) is a dominant geomorphic agent in arid and semi-arid regions. Wind can erode, transport, and deposit sediment, forming features like sand dunes, loess deposits, and erosional landforms. Playas are flat, dry lakebeds found in desert basins, which are depositional features associated with ephemeral lakes and wind processes (deflation and deposition). So, D-3.
– Running water (rivers) creates features like valleys and erosional landforms at waterfalls (plunge pools).
– Glaciers carve distinctive landscapes in mountainous and polar regions (horns, cirques, U-shaped valleys).
– Wind shapes arid landscapes through erosion, transport, and deposition (playas, dunes).
– Horns are characteristic features of glaciated mountain ranges, resulting from the headward erosion of multiple cirques around a peak.
– Playas are temporary lakes; when they dry, the flat surface is often subject to wind deflation and deposition of fine sediments.