Resources and Development Test - 28

Regur soil is suitable for cotton cultivation. It is a black coloured soil. It is said be perfect for cotton cultivation. It is rich in iron content.

Moraines is any glacially formed accumulation of unconsolidated glacial debris that occus in both currently and formerly glaciated regions on the earth. These are formed of the debris of glaciers. They are not formed due to river erosions.

Land which were taken up for cultivation but have been temporarily put off cultivation for a period of not less than one year buy not more than five years due to poverty of the cultivators, inadequate supply of water, malarial climate, silting of canals and rivers, unremunerative nature of farming etc. are treated as other fallow land. The land under this category was the highest in Tirunelveli district and ranked first contributing 10.9% to the total area of the state under this category.

The soil is a living system. It takes millions of years to form soil upto a few cm in depth. Relief, parent rock or bedrock, climate, vegetation and other forms of life and time are important factors in the formation of soil.

The thin layer of grainy substance covering the surface of the earth is called soil. In the upper most layer of the earth it it is available in the loosey material form. Soil is made up of organic matter, minerals and weathered rocks found on the earth. This happens through the process of weathering.

The cumulative area sown with crops and orchards is the net area sown. It is a region in which the total number of crops is produced only once a year. The total area sown with crops and orchards once or more in one year is the gross cropped area. It also includes the net area that is sown.

The correct answer is B .

The agricultural and forestry land is mainly used for the crop cultivation, plantation or for Agro based productions in terms of timber, cash crop plantation, bio productive plantation for constructing the entire township and infrastructural development.