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NEET Biology Organisms and population Question Bank Self Evaluation Test - Organisms and Population

  • question_answer
    If b=65 and d = 45, N = 100 then find out \[\frac{dN}{dt.}\]

    A) 2000          

    B) 1000

    C) 200                                          

    D) 100

    Correct Answer: A

    Solution :

    [a] For a closed population \[\Delta N=B-D\] \[\frac{dN}{dt}=B-D\] \[\Delta \,\,\,\,\,\,B=bN;\,\,\,\,\,\,\,\,dN\]\[\frac{dN}{dt}-(b-d)N=(65-45)100\] \[=2000\] (b and d are instanteous birth and death rates)


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