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🔬 Biology  ·  Reproductive Health  ·  NEET

Which of the following correctly describes the relationship between crude birth rate, crude death rate, and population growth rate?

Answer: Growth rate = CBR minus CDR (per 1000 population).

  • A Growth rate = CBR divided by CDR
  • B Growth rate = CBR multiplied by CDR
  • C Growth rate = CBR minus CDR (per 1000 population)
  • D Growth rate = CDR minus CBR plus migration rate

Correct answer: C. Growth rate = CBR minus CDR (per 1000 population)

Explanation: The natural population growth rate is calculated as Crude Birth Rate (CBR) minus Crude Death Rate (CDR) per 1000 population. Positive values indicate population increase.

Contraceptive Methods by CategoryNaturalabstinence,withdrawalBarriercondom (alsoblocks STIs)IUDCuT, LippesloopHormonalpills, injectables,implantsSurgicalvasectomy,tubectomyEffectiveness and permanence generally increase left→right; only barrier methods stop STI transmission

Contraceptive methods span a spectrum from temporary/natural to permanent/surgical; condoms stand out as the only method offering STI protection alongside contraception.

Concept context

Understand reproductive health, family planning, contraception methods, STIs, population control, and assisted reproductive technologies.

Read the full Reproductive Health notes →