Question

The Northern Plains are important to India because of which of the following reasons?
A.Rivers are navigable throughout the year
B.Flat land- good for roads and railways
C.Irrigational facilities
D.All of these

Answer 1

Hint: The plains of Northern India include the lowlands of the three major rivers -the Ganga, the Brahmaputra and the Indus together with their tributaries. They occupy one-fifth of the area, but support half the population of South Asia.

Complete answer:
These plains are the core area of its political, economic and cultural activities.These plains extend between the mouths of the Ganga and the Indus, along the mountains. The longitudinal extent from the banks of the Ravi and the Sutlej to the Ganges delta alone is of two thousand four hundred kilometres. The plain includes Allahabad and the Rajmahal Hills. It is the narrowest in Assam .
It is believed that the plains were once an area of the Tethys sea and were formed by gradual filling of an initial marine depression by the sediments brought down by the Indus, the Ganga, the Brahmaputra and their tributaries. However, the infilling has not been homogenous as there are differences in depth of the alluvium between their basins. There are differences in local relief over the entire plains from Sind to Assam. Thus, each segment of the plain has its own distinctive features.On the basis of regional characteristics, the Great Plains can be subdivided .

Hence, the correct answer is option (D).

Note:In India, these plains lie in Punjab, Haryana and Himachal Pradesh. A significant feature of these plains is the doabs of the five tributaries of the Indus-Jhelum, Chenab, Ravi, Sutlej and Beas. In fact, Punjab derives its name from these, i.e., the lạnd of five rivers.