Q. Which of the following landforms are typically associated with the upper course of rivers?

1. Potholes
2. Interlocking spurs
3. Peneplains
4. Gorges

Select the correct option using the codes given below:
Answer: Only 1, 2 & 4
Notes: Potholes, interlocking spurs, and gorges are characteristic features of the upper course of rivers due to rapid downward erosion and steep gradients. Peneplains, however, are associated with the late stages of river erosion and represent low, featureless plains. Therefore, options 1, 2, and 4 are correct, while option 3 (peneplains) is not.