OCR A level Biology A past papers
Specification H420
June grade boundaries & calculatorDownload free past paper tracker (PDF) One A4 page to record your dates, scores and grades.
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Revision resources · 1 official resource
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2025 · June
Official whole-qualification boundaries. These percentages aren't individual-paper grades.
Biological processes
H420/01 · 100 marks
Missing material · Q9: exercise graph
The published paper omits the oxygen-uptake and carbon-dioxide-output graph in Q9. That question needs the graph; you can practise the remaining questions normally.
Open official paperBiological diversity
H420/02 · 100 marks
Unified biology
H420/03 · 70 marks
2024 · June
Official whole-qualification boundaries. These percentages aren't individual-paper grades.
Biological processes
H420/01 · 100 marks
Biological diversity
H420/02 · 100 marks
Unified biology
H420/03 · 70 marks
2023 · June
Official whole-qualification boundaries. These percentages aren't individual-paper grades.
Unified biology
H420/03
Biological diversity
H420/02
Biological processes
H420/01
2022 · June
About this exam sitting
England’s 2022 exams used pandemic adaptations and transitional grading. Advance information, where supplied, applied to that sitting only. It is historical context, not a topic guide for your next exam.
Official whole-qualification boundaries. These percentages aren't individual-paper grades.
Unified biology
H420/03
Biological diversity
H420/02
Biological processes
H420/01
Supporting files
2021 · Autumn
About this exam sitting
An exceptional autumn sitting after summer exams were cancelled in England. A smaller, different entry cohort and exceptional grading arrangements make comparisons with ordinary summer results unreliable. Use this paper for practice; its boundaries do not predict a future grade.
Biological processes
H420/01
Supporting filesBiological diversity
H420/02
Unified biology
H420/03
2020 · Autumn
About this exam sitting
An exceptional autumn sitting after summer exams were cancelled in England. A smaller, different entry cohort and exceptional grading arrangements make comparisons with ordinary summer results unreliable. Use this paper for practice; its boundaries do not predict a future grade.
Biological processes
H420/01
Biological diversity
H420/02
Unified biology
H420/03
2019 · June
Official whole-qualification boundaries. These percentages aren't individual-paper grades.
Biological diversity
H420/02
Paper correction · Q13
Q13: use superscripts in the Hardy–Weinberg equation: p² + 2pq + q² = 1.
Official correctionUnified biology
H420/03
Biological processes
H420/01
Examiner reportAwaiting checksMissing material · Q4: blood-cell image
The published paper omits the blood-cell micrograph labelled P and Q, needed for Q4. Q5 also refers to this image; check which information its stem provides before using it for practice.
Open official paperSupporting files
2018 · June
Biological processes
H420/01
Supporting filesBiological diversity
H420/02
Supporting filesUnified biology
H420/03
2017 · June
Biological processes
H420/01
Supporting filesBiological diversity
H420/02
Unified biology
H420/03
Supporting files
Specimen materials
Biological processes (includes mark scheme)
H420/01
Biological diversity (includes mark scheme)
H420/02
Unified biology (includes mark scheme)
H420/03
What do the link checks mean?
For verified links, we have checked the exam series, paper and resource type. Links marked Check pending appear in official listings, but those details still need checking. Other rows and supporting files still need research. “Awaiting checks” does not mean the exam board has withheld or removed a file.