Organisms and PopulationMedium
Question
The equation of Verhulst-Pearl logistic growth is $\frac{dN}{dt} = rN\left\lbrack \frac{K - N}{K} \right\rbrack$.
From this equation, K indicates:
Options
A.Carrying capacity
B.Population density
C.Intrinsic rate of natural increase
D.Biotic potential
Solution
Sol. [Key Concept: Carrying capacity in logistic growth]
In $\frac{dN}{dt} = rN\left( \frac{K - N}{K} \right)$,
N is population density,
r is the intrinsic rate of natural increase and K is carrying capacity.
K is the population size that the habitat can sustain with its available resources.
At N = K, the model gives zero net population growth. Hence, option (1).
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