PDF
Mark Scheme (Results)
Summer 2025
Pearson Edexcel Level 3 Advanced GCE
In Biology B (9BI0)
Paper 02: Advanced Physiology, Evolution and
Ecology
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. We
provide a wide range of qualifications including academic, vocational, occupational and
specific programmes for employers. For further information visit our qualifications websites
at www.edexcel.com or www.btec.co.uk. Alternatively, you can get in touch with us using the
details on our contact us page at www.edexcel.com/contactus.
Pearson: helping people progress, everywhere
Pearson aspires to be the world’s leading learning company. Our aim is to help everyone
progress in their lives through education. We believe in every kind of learning, for all kinds of
people, wherever they are in the world. We’ve been involved in education for over 150 years,
and by working across 70 countries, in 100 languages, we have built an international
reputation for our commitment to high standards and raising achievement through
innovation in education. Find out more about how we can help you and your students at:
www.pearson.com/uk
Summer 2025
Question Paper Log Number P74460A
Publications Code 9BI0_02_2506_MS
All the material in this publication is copyright
© Pearson Education Ltd 2025
, General Marking Guidance
• All candidates must receive the same treatment. Examiners must mark
the first candidate in exactly the same way as they mark the last.
• Mark schemes should be applied positively. Candidates must be
rewarded for what they have shown they can do rather than penalised
for omissions.
• Examiners should mark according to the mark scheme not according to
their perception of where the grade boundaries may lie.
• There is no ceiling on achievement. All marks on the mark scheme
should be used appropriately.
• All the marks on the mark scheme are designed to be awarded.
Examiners should always award full marks if deserved, i.e. if the answer
matches the mark scheme. Examiners should also be prepared to award
zero marks if the candidate’s response is not worthy of credit according
to the mark scheme.
• Where some judgement is required, mark schemes will provide the
principles by which marks will be awarded and exemplification may be
limited.
• When examiners are in doubt regarding the application of the mark
scheme to a candidate’s response, the team leader must be consulted.
• Crossed out work should be marked UNLESS the candidate has replaced
it with an alternative response.
Mark Scheme (Results)
Summer 2025
Pearson Edexcel Level 3 Advanced GCE
In Biology B (9BI0)
Paper 02: Advanced Physiology, Evolution and
Ecology
,Edexcel and BTEC Qualifications
Edexcel and BTEC qualifications are awarded by Pearson, the UK’s largest awarding body. We
provide a wide range of qualifications including academic, vocational, occupational and
specific programmes for employers. For further information visit our qualifications websites
at www.edexcel.com or www.btec.co.uk. Alternatively, you can get in touch with us using the
details on our contact us page at www.edexcel.com/contactus.
Pearson: helping people progress, everywhere
Pearson aspires to be the world’s leading learning company. Our aim is to help everyone
progress in their lives through education. We believe in every kind of learning, for all kinds of
people, wherever they are in the world. We’ve been involved in education for over 150 years,
and by working across 70 countries, in 100 languages, we have built an international
reputation for our commitment to high standards and raising achievement through
innovation in education. Find out more about how we can help you and your students at:
www.pearson.com/uk
Summer 2025
Question Paper Log Number P74460A
Publications Code 9BI0_02_2506_MS
All the material in this publication is copyright
© Pearson Education Ltd 2025
, General Marking Guidance
• All candidates must receive the same treatment. Examiners must mark
the first candidate in exactly the same way as they mark the last.
• Mark schemes should be applied positively. Candidates must be
rewarded for what they have shown they can do rather than penalised
for omissions.
• Examiners should mark according to the mark scheme not according to
their perception of where the grade boundaries may lie.
• There is no ceiling on achievement. All marks on the mark scheme
should be used appropriately.
• All the marks on the mark scheme are designed to be awarded.
Examiners should always award full marks if deserved, i.e. if the answer
matches the mark scheme. Examiners should also be prepared to award
zero marks if the candidate’s response is not worthy of credit according
to the mark scheme.
• Where some judgement is required, mark schemes will provide the
principles by which marks will be awarded and exemplification may be
limited.
• When examiners are in doubt regarding the application of the mark
scheme to a candidate’s response, the team leader must be consulted.
• Crossed out work should be marked UNLESS the candidate has replaced
it with an alternative response.
