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IB Biology HL C4.1.7 Population Growth Curves Questions

Analyse exponential, transitional and plateau phases and relate natality, immigration, mortality, resources and disease to population-growth curves in IB Biology HL C4.1.7.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Label or interpret lag, exponential, transitional and plateau phases on a sigmoid population-growth curve, including the carrying-capacity level.
  • Explain curve changes by comparing natality plus immigration with mortality plus emigration and relating resource availability, competition, predation or disease to growth rate.

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Study C4.1.7—Population growth curves conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL C4.1.7 Population Growth Curves Questions question 1

[Maximum number: 3]

Explain the factors that can contribute to the exponential growth phase in a sigmoid population curve.

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