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Answer

Correct Option is 1, 2 and 3

Answer explanation : Meanders: In large flood and delta plains, rivers rarely flow in straight courses. Loop-like channel patterns called meanders develop over flood and delta plains. Meander is not a landform but is only a type of channel pattern. Normally, in meanders of large rivers, there is active deposition along the concave bank and undercutting along the convex bank. As meanders grow into deep loops, the same may get cut-off due to erosion at the inflection points and are left as ox-bow lakes. Meander is not a landform but is only a type of channel pattern. In large flood and delta plains, rivers rarely flow in straight courses. Loop-like channel patterns called meanders develop over flood and delta plains. These are associated with rivers in old stages. Following factors play important role in formation of meanders: (i) propensity of water flowing over very gentle gradients to work laterally on the banks (ii) unconsolidated nature of alluvial deposits making up the banks with many irregularities which can be used by water exerting pressure laterally; (iii) coriolis force acting on the fluid water deflecting it like it deflects the wind.

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