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State the characteristic of each of the soils named below that makes them most suitable
for crop cultivation:
i. Black Soil
ii. Red Soil
i.It is able retain moisture.
ii. It is rich in potash and become fertile with proper use of fertilizers and irrigation.
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State the geographical term for each of the following processes:
i. The process by which soluble minerals dissolve in rain water and percolate to the bottom, leaving the top soil infertile.
ii. The process by which rain water, flowing in definite path removes the top soil, thus causing deep cuts to the surface of the land.
i. Leaching
ii. Gully erosion
Define the following :
i. Pedogenesis.
ii. Humus
iii. Bhangar
i. Pedogenesis: It is a process of soil formation. The formation of soil is influenced by climatic conditions such as rainfall, temperature etc.
ii. Humus: It is the organic component of soil which is formed by microbial decomposition of leaves and other plant materials. It increases the fertility of the soil.
iii. Bhangar: Old alluvial soil composed of lime nodules or kankar is called Bhangar. It has a clayey composition.
State any two methods of controlling soil erosion.
Two methods of controlling soil erosion are:
i. Afforestation: The roots of the trees hold on to the soil and prevent soil erosion.
ii. Terrace Farming: In the hilly regions, terrace farming prevents the soil from being washed away by running water.
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Mock Test Series
