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12 Biology Organisms and Populations - Set No : 10 Question No :1

Question No : 1
               Logistic growth occurs when there is     

                a)          No resistance from increasing population          b)          Unlimited food     

                c)          Fixed carrying capacity          d)          All of the above     

Answer No : 1
     (c)Logistic Growth Model No population can continue to grow exponentially, as the resource availability become limiting at certain point of time. Logistic growth model have fixed carrying capacityIt is described by the equation   Rate of change of population densityN = Population density at timeN = Population densityr = Intrinsic rate of natural increaseK = Carrying capacityPopulation growth curve  when resources are not limiting. Plot is exponential or geometrical curve . When resources are limiting the growth, plot is logistic‘’ is carrying capacity     

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