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This document contains the official mark scheme for the OCR A Level Biology A H420/02 Paper 2: Biological Diversity from the June 2025 examination series. The mark scheme includes examiner guidance, correct answers, and detailed mark allocation used by OCR examiners when assessing candidates in A Level Biology Paper 2.

This document contains the official mark scheme for the OCR A Level Biology A H420/03 Paper 3: Unified Biology from the June 2025 examination series. The mark scheme includes examiner guidance, correct answers, and detailed mark allocation used by OCR examiners when assessing candidates in A Level Biology Paper 3.

This document contains the official mark scheme for the OCR A Level Biology A H420/01 Paper 1: Biological Processes from the June 2025 examination series. The mark scheme provides examiner guidance, correct answers, and detailed mark allocation used by OCR examiners when assessing A Level Biology Paper 1. What’s included Complete H420/01 June 2025 mark scheme Official OCR examiner marking guidance Correct answers and mark allocations Detailed marking criteria Insight into ho...

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