IB past paper analysis

Biology SL
May 2026 · Paper 2 · TZ3

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  • 7questions
  • 64marks
  • 24question parts
  • 18micro-topics

What this paper tests

Mark distribution

  • Interaction and interdependence38%
  • Continuity and change30%
  • Form and function19%
  • Unity and diversity14%

Hardest areas (by marks)

  1. 1.Adaptive immunity, antibodies and memory8 marks
  2. 2.Reproduction in flowering plants8 marks

Question types

explain / justify: 42%outline: 29%identify: 8%compare: 8%0%
  • explain / justify42%
  • outline29%
  • identify8%
  • compare8%

0% of parts are show / prove.

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Questions in this paper

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Where to go next

Good to know

Can I download Biology SL May 2026 TZ3 Paper 2 here?

No. The paper and its mark scheme belong to the IB and are not reproduced. This page gives the structure of every question (marks, command term, micro-topic, the skill tested), the exam analysis, and practice questions we wrote to test the same skills. Subscribers can also open our summary of how each part's marks are awarded.

Which topics dominate May 2026 TZ3 Paper 2?

Interaction and interdependence 38% (typical 23%), Continuity and change 30% (typical 25%), Form and function 19% (typical 24%).

How do I practise this paper without the paper?

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