Botany-Population Growth
NEET Botany Population Growth MCQ Question
Type: MCQ-numerical-Hard-Class 12
Consider a population with an initial density of N individuals. If the birth rate (B) is 50, the death rate (D) is 30, the immigration rate (I) is 20, and the emigration rate (E) is 10, what will be the population density at the next time period?
A
N + 30
B
N + 40
C
N + 20
D
N + 50
Correct Answer
Option A
Detailed Explanation
The population density at time t+1 is given by N_t+1 = N_t + [(B + I) - (D + E)]. Substituting the given values: N_t+1 = N + [(50 + 20) - (30 + 10)] = N + 30.
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