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STD 12 - 11. organisms and populations — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 11. organisms and populations1 Mark
MCQ
The permanent decrease in population number occurs due to The permanent decrease in population number occurs due to
  • A
    Migration
  • B
    Natality
  • C
    Emigration
  • ✓
    Mortality
✓

Answer

Correct option: D.
Mortality
d
Mortality is the death rate per thousand individuals per year. Mortality rate decreases population size and population density.

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