SSC Ecology And Environment Sample Paper NCERT Sample Paper-2

  • question_answer
    Crop rotation is used by farmers to increase

    A)  Soil fertility

    B)  Community area

    C)  Organic content of soil

    D)  Nitrogenous content in the soil

    Correct Answer: A

    Solution :

    [a] If the same crop is repeated in the field year after year, a specific mineral deficiency may arise in the soil. To maintain .the nitrogen economy (soil fertility) of soil, a crop is alternated by a leguminous crop. It is called crop rotation.

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