NEETZoologyOrganisms and Populations
In exponential growth, the increase or decrease in population size during a unit period is
Options
- A(B+ I) – (D + E)
- B(b + d) – N
- CN × (b – d)
- Dr + N
Correct answer
C. N × (b – d)
Step-by-step solution
The increase or decrease in N during a unit time period t (dN/dt) will be dN/dt = (b – d) × N Let (b–d) = r, then dN/dt = rN The r in this equation is called the ‘intrinsic rate of natural increase’