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9th Class Science Improvement in food resources Question Bank Improvement in Food Resources

  • question_answer
    Crop rotation is an important part of organic farming. Why is mono-cropping problematic?

    A) The crop is vulnerable to organized crop thieves.

    B) It encourages the build-up of diseases and pests that destroy that particular crop.  

    C) It does not use minerals.

    D) It is expensive.

    Correct Answer: B

    Solution :

    Mono cropping encourages the build-up of diseases and pests that destroy that particular crop. As rhizobium the nitrogen fixing bacteria is present in the roof modules of legumes. Hence they do not require nitrogen fertiliser.


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