Question

"This drainage pattern develops in regions where hard and soft rocks exist together. Generally, the river streams find it easier to flow through soft rocks when compared to hard rocks. Therefore, we can find their tributaries passing through the soft rocks and joining the main river at right angles".

Identify the drainage pattern being alluded to.

• A. Dendritic pattern
• B. Trellis pattern
• C. Radial pattern
• D. Linear pattern

Answer 1

The correct option is B Trellis pattern

The Trellis drainage pattern develops in regions made up of alternate belts of hard and soft rocks. These rocks dip in the same directions and lie at right angles to the general slope, below which the main river flows. The tributaries of the main river extend their valleys by headward erosion into the weak rocks, which turn into wide valleys called vales.