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Mark Scheme (Results) Summer 2024 Pearson Edexcel A Level GCE In Biology A Salters Nuffield (9BN0) Paper 03: General and Practical Applications in Biology

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1(a) An answer that makes reference to the following: • when a species {moves / spreads / grows} into a new area (1) ALLOW to immigrate into a (new) area ALLOW any term that indicates an area e.g. environment / habitat ALLOW other terms in place of species e.g. plant / animal / organism ALLOW pioneer species being first to live in an area IGNORE dominant species in an area / species outcompeting other species in an area (1) Question number Answer Additional guidance Mark 1(b) An answer that makes reference to three of the following: • IAA {accumulates on / diffuses / moves to} shaded side (of shoot) (1) • (IAA) regulates the activity of transcription factors (1) • causing cell elongation (1) • bending the shoot towards the light (1) ALLOW auxin for IAA ALLOW plant for shoot ALLOW causing plant to grow towards the light ALLOW other words for bending e.g. leaning IGNORE move towards / point towards

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Institution
2024 Pearson Edexcel
Course
2024 Pearson Edexcel

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Mark Scheme (Results)



Summer 2024


Pearson Edexcel A Level GCE
In Biology A Salters Nuffield (9BN0)
Paper 03: General and Practical Applications in
Biology

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Summer 2024
Question Paper Log Number P74458RA
Publications Code 9BN0_03_2406_MS
All the material in this publication is copyright
© Pearson Education Ltd 2024

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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.

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2024 Pearson Edexcel

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