NEETBiologyOrganisms and PopulationsMCQ+4 / −1
When will the population density increase, under special conditions? When the number of :
- ADeaths exceeds number of births and also number of emigrants equals number of immigrants.
- BBirths plus number of immigrants equals number of deaths plus number of emigrants.
- CBirths plus number of emigrants is more than the number of deaths plus number of immigrants.
- DBirths plus number of immigrants is more than the sum of number of deaths and number of emigrants.
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Correct answer: D
(N) is the population density at time t, then its density at time t + 1 is
$$\mathrm{N_{t+1}=N_t+[(B+I)-(D+E)]}$$
Population density will increase if the number of births plus the number of immigrants (B + I) is more than the number of deaths plus the number of emigrants (D + E).
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