Mark Scheme (Results) November 2021 Pearson Edexcel GCE In Biology A Salters Nuffield (9BN0) Paper 1: The Natural Environment and Species Survival

Mark Scheme (Results)

November 2021

Pearson Edexcel GCE In Biology A Salters Nuffield

(9BN0) Paper 1: The Natural Environment and

Species Survival

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 November 2021

 Question Paper Log Number P65458A*

 Publications Code 9BN0_01_2111_MS*

 All the material in this publication is copyright

 © Pearson Education Ltd 2021

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.

Question

Number

Answer Mark

1(a) The only correct answer is A absorbs infrared radiation reflected by the surface of the Earth

B is incorrect because it does not absorb ultraviolet

C is incorrect because it does not reflect infrared

D is incorrect because it does not reflect ultraviolet

(1)

Question

Number

Answer Additional guidance Mark

1(b) Chloroplast

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Version 2021
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