Skip to content
Try on iPad

The carbon cycle and reforestation: Edexcel A‑Level Biology A questions

Every Edexcel A-Level Biology A exam question on The carbon cycle and reforestation (specification points 5.21–5.22), 2016–2025, with its mark scheme and examiner’s report.

Find questions1,749
Calculations

1,749 questions

  1. Q9(b)

    June 2025 · Paper 1

    3 marksThe carbon cycle and reforestation
    The whole paper ↗
    June 2025 Paper 1, question 9(b): Trees are important carbon sinks. A formula can be used to calculate the mass of carbon in the trunk of a tree: Biomass = volume of trunk × density of the speci

  2. Q9(c)

    June 2025 · Paper 1

    3 marksThe carbon cycle and reforestation
    The whole paper ↗
    June 2025 Paper 1, question 9(c): Scots pine is a species of conifer tree with a density of 420 kg m–3 . Conifers have fewer species of plant growing underneath them than oak trees. Deduce why p

  3. Q8(b)

    June 2023 · Paper 1

    1 markThe carbon cycle and reforestation
    The whole paper ↗
    June 2023 Paper 1, question 8(b): Seagrass is a very slow growing species that lives for a long time. Seagrass absorbs large amounts of carbon dioxide. It stores 15 times more carbon dioxide per

  4. Q8(c)(iii)

    June 2023 · Paper 1

    3 marksThe carbon cycle and reforestation
    The whole paper ↗
    June 2023 Paper 1, question 8(c)(iii): Seagrass is long-living and more resistant to breakdown by microorganisms than plants living in the rainforest. Explain why maintaining a healthy population of

  5. Q2(b)(ii)

    June 2022 · Paper 1

    3 marksThe carbon cycle and reforestation
    The whole paper ↗
    June 2022 Paper 1, question 2(b)(ii): Beef cattle are traditionally reared by grazing on natural pastures (grassland). In recent years, large areas of rainforest have been cleared to produce beef. E

  6. Q3(b)(iii)

    June 2022 · Paper 3

    3 marksProductivity and energy transferThe carbon cycle and reforestation
    The whole paper ↗
    June 2022 Paper 3, question 3(b)(iii): Deduce the effect of succession on the level of carbon dioxide in the atmosphere. (3)

  7. Q1(d)

    November 2021 · Paper 1

    4 marksThe carbon cycle and reforestation
    The whole paper ↗
    November 2021 Paper 1, question 1(d): Some power stations burn wood chips instead of fossil fuels to produce electricity. The photograph shows wood chips at a power station. © Mr. Amarin Jitnathum/S

  8. Q5(b)(i)

    November 2021 · Paper 3

    2 marksThe carbon cycle and reforestation
    The whole paper ↗
    November 2021 Paper 3, question 5(b)(i): Describe how forests can be managed as a sustainable resource. (2)

  9. Q5(b)(ii)

    November 2021 · Paper 3

    4 marksThe carbon cycle and reforestation
    The whole paper ↗
    November 2021 Paper 3, question 5(b)(ii): Explain the impact of cutting down trees on climate change. (4)

  10. Q3(b)(iii)

    October 2020 · Paper 3

    3 marksThe carbon cycle and reforestation
    The whole paper ↗
    October 2020 Paper 3, question 3(b)(iii): Comment on the impact of these different types of ecosystem on global warming. (3)

  11. Q9(a)(i)

    June 2018 · Paper 1

    1 markThe carbon cycle and reforestation
    The whole paper ↗
    June 2018 Paper 1, question 9(a)(i): Which statement describes the role of photosynthesis in the carbon cycle? (1) A carbon dioxide is oxidised to form organic molecules B carbon dioxide is reduced

  12. Q9(b)

    June 2018 · Paper 1

    3 marksThe carbon cycle and reforestation
    The whole paper ↗
    June 2018 Paper 1, question 9(b): Explain how reforestation of tropical rainforests can be used to minimise climate change. (3)
All 12 questions on The carbon cycle and reforestation, as a list
  1. June 2025, Paper 1, Q9(b) (3 marks): Trees are important carbon sinks. A formula can be used to calculate the mass of carbon in the trunk of a tree: Biomass = volume of trunk × density of the speci
  2. June 2025, Paper 1, Q9(c) (3 marks): Scots pine is a species of conifer tree with a density of 420 kg m–3 . Conifers have fewer species of plant growing underneath them than oak trees. Deduce why p
  3. June 2023, Paper 1, Q8(b) (1 mark): Seagrass is a very slow growing species that lives for a long time. Seagrass absorbs large amounts of carbon dioxide. It stores 15 times more carbon dioxide per
  4. June 2023, Paper 1, Q8(c)(iii) (3 marks): Seagrass is long-living and more resistant to breakdown by microorganisms than plants living in the rainforest. Explain why maintaining a healthy population of
  5. June 2022, Paper 1, Q2(b)(ii) (3 marks): Beef cattle are traditionally reared by grazing on natural pastures (grassland). In recent years, large areas of rainforest have been cleared to produce beef. E
  6. June 2022, Paper 3, Q3(b)(iii) (3 marks): Deduce the effect of succession on the level of carbon dioxide in the atmosphere. (3)
  7. November 2021, Paper 1, Q1(d) (4 marks): Some power stations burn wood chips instead of fossil fuels to produce electricity. The photograph shows wood chips at a power station. © Mr. Amarin Jitnathum/S
  8. November 2021, Paper 3, Q5(b)(i) (2 marks): Describe how forests can be managed as a sustainable resource. (2)
  9. November 2021, Paper 3, Q5(b)(ii) (4 marks): Explain the impact of cutting down trees on climate change. (4)
  10. October 2020, Paper 3, Q3(b)(iii) (3 marks): Comment on the impact of these different types of ecosystem on global warming. (3)
  11. June 2018, Paper 1, Q9(a)(i) (1 mark): Which statement describes the role of photosynthesis in the carbon cycle? (1) A carbon dioxide is oxidised to form organic molecules B carbon dioxide is reduced
  12. June 2018, Paper 1, Q9(b) (3 marks): Explain how reforestation of tropical rainforests can be used to minimise climate change. (3)

Questions, mark schemes and examiner’s reports are © Pearson Edexcel, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Every Edexcel A-Level Biology A paper.

Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.