CourseCourseConceptConceptDocsDocuments

IB ESS HL 4.4.13 Hl Indicator Species Questions

Use indicator species to infer pollution or ecosystem condition.

Syllabus
First assessment 2026
Course
ESS HL
Level
HL

Exam points

  • identify an indicator species or biotic index as a biological measure of pollution
  • explain how indicator-organism abundance, diversity, distribution and tolerance reveal pollution levels
  • interpret differences in indicator communities to compare water or air quality and infer pollution impacts

Learn this topic

Study 4.4.13 (HL)—Indicator species conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB ESS HL 4.4.13 Hl Indicator Species Questions question 1

[Maximum number: 1]

With reference to Figures: Figure: Probability of lead exposure for condors by diet and Figure: Lead and non-lead bullets after impact:

State the term for a species that is used to measure pollution levels.

All question bank results loaded