Edexcel A Level Biology A (Salters-Nuffield)
Edexcel A Level Biology A (Salters-Nuffield) Topic 5: Climate Change and Evolution Exam Questions
Free Edexcel A Level Biology A (Salters-Nuffield) exam questions on Topic 5: Climate Change and Evolution, with mark schemes. Covers evidence for climate change, its effects, the carbon cycle and speciation.
Topic 5: Climate Change and Evolution exam questions
These packs of real past exam questions cover the whole of Topic 5: On the Wild Side, including Topic 5: Climate Change and Evolution. Work through every question on this sub-topic, then mark your answers against the mark scheme.
StemUp mark scheme flashcards
Edexcel A Level Biology A (SNAB) 9BN0 Flashcards (Anki & Quizlet)
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Use them on Anki or Quizlet, then test yourself with the questions on this page.
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About Edexcel A Level Biology A (Salters-Nuffield) Topic 5: Climate Change and Evolution
This part of Topic 5 links climate change to evolution. Expect data questions on temperature records and evaluation of evidence.
What you need to know
- Evidence Temperature records, dendrochronology and pollen in peat bogs.
- Causes and effects Greenhouse gases, the carbon cycle and effects on species distribution and development.
- Models Extrapolated data and models predict future change, with limitations.
- Evolution Natural selection and speciation through reproductive isolation.
Common mistakes in Topic 5: Climate Change and Evolution
- Treating models as certain predictions.
- Mixing up the greenhouse effect with ozone depletion.
- Not using data values in the answer.
Try three Topic 5: Climate Change and Evolution exam-style questions
1. Explain how pollen in peat bogs provides evidence for climate change. (3 marks)
Show the mark scheme answer
Pollen is preserved in layers (1); the species present show which plants grew (1), which indicates past climate (1).
2. Explain how carbon dioxide causes global warming. (2 marks)
Show the mark scheme answer
It absorbs infrared radiation re-emitted from the Earth (1), trapping heat in the atmosphere (1).
3. Explain how reproductive isolation can lead to speciation. (3 marks)
Show the mark scheme answer
Populations cannot interbreed (1); different selection pressures change allele frequencies (1), until they can no longer produce fertile offspring (1).
Topic 5: Climate Change and Evolution FAQs
What does this part of SNAB Topic 5 cover?
Evidence for climate change, causes, effects, models and evolution.
Is there a core practical?
Yes, investigating the effect of temperature on seedling growth or development.
How is the carbon cycle examined?
Usually linked to the greenhouse effect and ways to reduce carbon emissions.
Revise this topic with flashcards: Edexcel A Level Biology A (SNAB) 9BN0 Flashcards, with mark scheme answers for Anki and Quizlet.
