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IB Biology HL 4.2.4 Food-web models and trophic relationships Question Bank

Practise IB Biology HL 4.2.4 by evaluating food-web models and trophic relationships using ecosystem evidence.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Compare the information represented by food chains and food webs.
  • Evaluate food-web models as representations of feeding relationships in ecosystems.

C4.2.4—Food chains and food webs question 1

[Maximum number: 2]

A retreating glacier leaves an environment of lifeless glacial deposits, including sands and gravels. Retreating glaciers often offer suitable sites for primary succession.

Figure for Question C4.2.4—Food chains and food webs question 1 — IB Biology HL

Compare and contrast food chains and food webs.

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