Mark Scheme (Results)
Summer 2025
Pearson Edexcel A Level GCE
In Biology A Salters – Nuffield (9BN0)
Paper 01: The Natural Environment and
Species Survive
,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 P78657A
Publications Code 9BN0_01_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.
Summer 2025
Pearson Edexcel A Level GCE
In Biology A Salters – Nuffield (9BN0)
Paper 01: The Natural Environment and
Species Survive
,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 P78657A
Publications Code 9BN0_01_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.
