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AIIMS AIIMS Solved Paper-2005

  • question_answer
    In an experiment freshly hatched larvae of an insect (khapra beetle) were reared on a basal diet (complete diet without cholesterol) with increasing amounts of cholesterol. Results obtained are shown in the graph given in the table: The graph indicates:

    A) cholesterol is an essential dietary requirement of khapra beetle

    B) Growth of khapra beetle is directly proportional to cholesterol concentration

    C) cholesterol concentration of \[2\,\mu /g\] diet is the optimum level

    D) growth of khapra beetle in inhibited when cholesterol concentration exceeds \[5\,\mu /g\] diet

    Correct Answer: A

    Solution :

    The graph indicates that cholesterol is an essential dietary requirement of khapra beetle because weight of insect larva increases with the increase in amount of cholesterol and weight becomes static at 6 n g cholesterol/g basal diet. If the growth rate would have been directly proportional to the cholesterol concentration then the graph would have been straight line.


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