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Organisms and Populations question

2013 · Q52
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Organisms and Populations question

2013 · Q52

NEETBiologyOrganisms and PopulationsMCQ+4 / −1
A biologist studied the population of rats in a barn, He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is :
  1. A
    15
  2. B
    05
  3. C
    10
  4. D
    zero
View written solutionFree

Correct answer: D

Net increase in population :
(Natality + Immigration) – (Mortality

  • Emigration)
    (250 + 20) – (240 + 30) = 270 – 270 = 0
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