KCET 2020 Biology Solved Paper

Verhulst-Pearl logistic growth is expressed by :

dN

dt

=rN(

K−N

K

)
where
N= population density at time t
K= the maximum number of organisms that can be supported by a habitat without environmental degradation is called carrying capacity
r= the number of birth rates minus the number of death rates in a population is called the intrinsic rate of natural increase.