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QUESTION
Q167) Khapra beetle larvae were raised on nasal diet to which was added increasing amount of cholesterol. The result is shown in the accompanying graph. It indicates... [AIIMS 2005 ]

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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 4µ 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.
Answer : (d)