Question

Compare J-shaped pattern with S-shaped pattern of population growth.

Answer 1

Basis	J-shaped (Exponential)	S-shaped (Logistic)
Environmental resistance	Absent or negligible	Present and increasing
Resources	Abundant food and space	Limited food and space
Phases	Slow start followed by rapid rise	Lag, log (rapid), and stationary phases
Carrying capacity	Not reached	Population stabilises at K
Equation	\[\frac{dN}{dt} = rN\]	\[\frac{dN}{dt} = rN\left(1 - \frac{N}{K}\right)\]
Example	Insects after rainy season	Newly introduced species in a habitat