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IB Biology Diagnostic Test

Find out where your Biology revision needs attention

Check your understanding of selected IB Biology SL or HL topics before deciding what to revise. Complete the diagnostic independently, then use the report to choose a focused follow-up task.

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IB Biology diagnostic FAQs

Answer review and report feedback are available after you complete the diagnostic. Answers are not revealed during the assessment, so you can check your understanding before looking at the guidance.

No. Its evidence comes from the questions completed within the selected scope. A topic result is useful for planning revision, but it does not establish mastery of untested areas or predict an examination grade.