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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
Main factor in increasing the population is
  • A
    More reproductive capacity
  • B
    Early marriage
  • ✓
    Higher natality and lower mortality
  • D
    Suitable and favourable environment
✓

Answer

Correct option: C.
Higher natality and lower mortality
c
(c) The excess of birth over deaths in a year per $1000$ in the population is called the growth rate. It is decrease in death rate and increase in birth rate which are two primary factor for the increase in human population.

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