INDIAN GEOGRAPHY

Detailed explanation-1: -The northern plains have intense deposits of alluvial soil. Alluvial soil contains amounts of lime, potash, and phosphorus. Alluvial soil helps in the growth of crops such as paddy, sugarcane, wheat, rice, maize, and other pulses. Alluvial soils are the deposits or materials from rivers.

Detailed explanation-2: -The correct answer is Alluvial Soils. Alluvial soil is the most widely spread and important soil. In fact, the entire northern plains are made of alluvial soil. These have been deposited by three important Himalayan river systems– the Indus, the Ganga and the Brahmaputra.

Detailed explanation-3: -The rivers originating from the Himalayas bring rich alluvial sediments down in the plains, creating the fertile alluvial soil.

Detailed explanation-4: -Alluvial soil is formed from the sediments deposited by the rivers in Indo-Gangetic plains and by sea waves in the coastal plains. It is very fertile and hence, excellent for agriculture. This soil is found extensively in the northern plains and other river valleys in India.

Detailed explanation-5: -The northern plains are formed by the alluvial deposits of the three major river systems of the Indus, the Ganga and the Brahmaputra along with their tributaries. This plain is completely formed of alluvial soil.