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Q: A drainage pattern where a river is joined by its tributaries approximately at right angles is--
  • A. Dendritic
  • B. Trellis
  • C. Rectangular
  • D. Radial
Correct Answer: Option B - A drainage pattern where a river is joined by its tributaries approximately at right angle is called "Trellis". When a river is joined by its tributaries at almost right angles, it develops a trellis Pattern. Trellis Pattern develops where hard and soft rock exist Parallel to each other.
B. A drainage pattern where a river is joined by its tributaries approximately at right angle is called "Trellis". When a river is joined by its tributaries at almost right angles, it develops a trellis Pattern. Trellis Pattern develops where hard and soft rock exist Parallel to each other.

Explanations:

A drainage pattern where a river is joined by its tributaries approximately at right angle is called "Trellis". When a river is joined by its tributaries at almost right angles, it develops a trellis Pattern. Trellis Pattern develops where hard and soft rock exist Parallel to each other.