Verhulst-Pearl Logistic Growth is described by the following equation: \( dN/dt = rN (K-N)/K \), where 'r' denotes the-
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Intrinsic rate of natural increase
In the logistic growth equation, N is the population density at time t, K is the carrying capacity, and r is the intrinsic rate of natural increase: the rate at which the population would grow per individual when resources are not limiting.
Option (1) Carrying capacity — Incorrect. The carrying capacity is K, the largest population the habitat can support.
Option (2) Intrinsic rate of natural increase — Correct. It is the built-in growth rate of the population, worked out from its birth and death rates.
Option (3) Population density — Incorrect. Population density is N.
Option (4) Mortality rate — Incorrect. The death rate is only one part of what r includes; r combines births and deaths.
Note: A similar question was also asked in CUET (UG) 2026 on 29-05-2026 (Slot 2).
NCERT Extract:
Population Growth – …
Figure 11.3 Population growth curve a when responses are not limiting the growth, plot is exponential, b when responses are limiting the growth, plot is logistic, K is carrying capacity