SSC General Science & Technology Sample Paper NCERT Sample Paper-7

  • question_answer
    One of the major difficulties in the biological control of insect pests is the

    A)  Practical difficulty of introducing the predator to specific areas

    B)  Method is less effective as compared with the use of insecticides

    C)  Predator does not always survive when transferred to a new environment

    D)  Predator develops a preference to other diets and may itself become a pest

    Correct Answer: D

    Solution :

    [d] Biological control refers to the use of living organisms like natural predators and parasites to reduce pest population and control diseases, however they may become pest as they can develop a preference to other diets.                          

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