Question

Arid soils range from red to brown in colour. They are generally sandy in texture and saline in nature. In some areas, the salt content is very high and common salt is obtained by evaporating the water. Due to the dry climate, high temperature, evaporation is faster and the soil lacks humus and moisture. The lower horizons of the soil are occupied by Kankar because of the increasing calcium content downwards. The Kankar layer formations in the bottom horizons restrict the infiltration of water. After proper irrigation, these soils become cultivable as has been in the case of western Rajasthan.

The lower horizons of the soil are occupied by what and why?

Options

• The lower horizons of the soil are occupied by Terai plains because of the increasing calcium content downwards.

• The lower horizons of the soil are occupied by Kankar because of the increasing calcium content downwards.

• The lower horizons of the soil are occupied by Bhabar because of the increasing calcium content downwards.

• The lower horizons of the soil are occupied by Kankar because of the decreasing calcium content downwards.

Answer 1

The lower horizons of the soil are occupied by Kankar because of the increasing calcium content downwards.