Assertion (A): In the upper course the dominant activity of a river is erosion.

Reason (R): The river flows swiftly as the gradient is steep.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

The laying down of material that has been weathered, eroded and transported by natural processes such as water, wind and ice.

1. Physical Weathering
2. Deposition
3. Denudation
4. Tributary

When a river divides into channels or smaller rivers they are called its:

1. Tributaries
2. Distributaries
3. Meanders
4. Transporteries

Assertion (A): River meanders are bends of longitudinal courses.

Reason (R): Meanders are the result of both erosion and deposition under conditions of a gentle slope and sufficient water in rivers.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.