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IB ESS HL 2.1.9 Population Interactions Question Bank

Explain competition, predation, mutualism and other population interactions using ecological evidence.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • identify the population or ecosystem process in the evidence
  • apply the correct interaction, growth or sampling model
  • justify the conclusion using limiting factors, assumptions and uncertainty

2.1.9—Population interactions question 1

[Maximum number: 1]
The Eurasian wolf food web

Figure:The Eurasian wolf food web

With reference to Figure: The Eurasian wolf food web, state the ecological relationship between the Eurasian wolf (Canis lupus lupus) and the Eurasian Iynx (Lynx Iynx).

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