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IB ESS HL 3.2.4 Iucn Red List Questions

Interpret Red List evidence and use it to assess extinction risk and conservation priority.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • identify and apply IUCN Red List criteria including population size, mature individuals, geographic range, fragmentation, habitat quality and extinction risk
  • interpret Red List data and calculations to compare threat categories and explain changes in conservation status
  • explain how human activity can alter Red List criteria and evaluate why a species may remain at risk despite an apparent status improvement

Learn this topic

Study 3.2.4—IUCN Red List conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB ESS HL 3.2.4 Iucn Red List Questions question 1

[Maximum number: 1]
Conservation status of indigenous species groups in New Zealand

Figure:Conservation status of indigenous species groups in New Zealand

With reference to Figure: Conservation status of indigenous species groups in New Zealand, identify the group of species most 'at risk of becoming threatened'.

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