Practice IB Biology the way it is examined
Every question on IBMarker is written to the IB Biology syllabus and its command terms - outline, explain, discuss, evaluate - with mark allocations that match the paper conventions. Multiple choice questions check instantly, and written answers are marked against IB-style markschemes so you learn exactly where marks are won and lost.
Practice at Standard or Higher Level across 22 topics. Track which subtopics need work, keep a daily streak, and revise with feedback that reads like an examiner's - not a textbook's.
Questions, answered
Is IBMarker affiliated with the IB? −
No. IBMarker is an independent study platform and is not affiliated with, or endorsed by, the International Baccalaureate Organization (IBO).
Are these real past-paper questions? +
No - they are original questions written in the style of IB papers, matched to the syllabus, command terms and mark allocations. That keeps practice authentic without reproducing copyrighted exam material.
How does the AI marking work? +
Your answer is compared against an IB-style markscheme, marking point by marking point. You get a mark out of the total, plus feedback on what earned credit and what was missing.
Is it free? +
Multiple choice practice is free with no account. Create a free account to have written answers AI-marked and to keep your progress, streaks and league place.
Does it cover both SL and HL? +
Yes - every question is tagged SL or HL where it applies, and you can filter the bank by topic and question type.