Biology › Past papers › OCR Biology A › June 2025
OCR A-level Biology A H420: June 2025
The question papers, mark schemes and examiner reports OCR publishes for the June 2025 series of H420, listed paper by paper. Every link goes to OCR’s own copy.
Checked against OCR’s own listing on 31 August 2026.
The files, by component
Paper 1: Biological processes
| Kind | File |
|---|---|
| Question paper | Question paper - Biological processes (H420/01) |
| Mark scheme | Mark scheme - Biological processes (H420/01) |
| Examiner report | Examiners' report - Biological processes (H420/01) |
Paper 2: Biological diversity
| Kind | File |
|---|---|
| Question paper | Question paper - Biological diversity (H420/02) |
| Mark scheme | Mark scheme - Biological diversity (H420/02) |
| Examiner report | Examiners' report - Biological diversity (H420/02) |
Paper 3: Unified biology
| Kind | File |
|---|---|
| Question paper | Question paper - Unified biology (H420/03) |
| Mark scheme | Mark scheme - Unified biology (H420/03) |
| Examiner report | Examiners' report - Unified biology (H420/03) |
For the whole series
| Kind | File |
|---|---|
| Moderators' report | Moderators' report - Practical endorsement (H414/04, H420/04, H422/04, H432/04, H433/04, H556/04, H557/04) |
The papers in this series
| Code | Paper | Length | Marks | Weighting |
|---|---|---|---|---|
| H420/01 | Biological processes | 2 hours 15 minutes | 100 marks | 37.0% |
| H420/02 | Biological diversity | 2 hours 15 minutes | 100 marks | 37.0% |
| H420/03 | Unified biology | 1 hour 30 minutes | 70 marks | 26.0% |
| H420/04 | Practical Endorsement in biology | no written paper | not marked | reported separately |
The series either side
June 2024, the series before. June 2025 is the most recent series OCR lists for H420.
Every sitting of H420 has the same structure. Only the questions change. The H420 past papers page lists every series, and the OCR Biology A specification map shows which headings we teach and where.
We checked these links against the exam boards’ websites on 31 August 2026. We do not host or reproduce past papers or mark schemes. If a link has moved, go to the board’s own past papers page.