Syllabus Edition

First teaching 2024

First exams 2026

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Zonation, Succession & Change in Ecosystems (DP IB Environmental Systems & Societies (ESS): SL): Exam Questions

7 mins5 questions
13 marks

Define zonation in the context of ecological systems.

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21 mark

State one abiotic factor that can cause zonation.

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31 mark

Define the term succession.

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41 mark

Outline one difference between primary and secondary succession.

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51 mark

State one factor that increases as an ecosystem undergoes succession.

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