Given below are two statements, one is labelled as Assertion (A) and other as Reason (R): Assertion (A): Teesta river was earlier a tributary of Ganga now it is a tributary of Brahmaputra. Reason (R) : River capturing is a major feature of Himalayan rivers. Select the correct answer using the codes given below. Codes :

Question

CollectorBabu · Accepted Answer

Correct Answer: Both (A) and (R) are true, but (R) is not correct explanation of (A). Teesta River originates from the Tso Lhamo Lake at an elevation of about 5280 m in the North Sikkim district. It is the right bank major tributary of the Brahmaputra river system. Like many other major Himalayan rivers of India, like the Ganga, Teesta is a glacier-fed river. Pahurni glacier, Khangse glacier and ChhoLhamo Lake are also considered the sources of the Teesta River. Historically, the Teesta river system was considered the major tributary of the Ganges. River capturing is mainly caused by the headward erosion of the river (which joins and captures the water of its neighbouring stream) and is very common in hilly regions like the Himalayas.

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