NEET2016ZoologyOrganisms and PopulationsActual
When does the growth rate of a population following the logistic model equal zero? The logistic model is given as d N / d t = r N 1 - N / K :
Options
- AWhen N / K is exactly one
- BWhen N nears the carrying capacity of the habitat
- CWhen N / K equals zero
- DWhen death rate is greater than birth rate
Correct answer
A. When N / K is exactly one
Step-by-step solution
In logistic growth model population growth equation is described as d N d t = r N ( K − N K ) Where, N = Population density at time t r = Intrinsic rate of natural increase K = Carrying capacity When N K = 1 then K − ​ N K = 0 Therefore, d N d t = 0