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How is biodiversity threatened and how can we protect it?: OCR GCSE Biology B questions

Every OCR GCSE Biology B exam question on B6.4 How is biodiversity threatened and how can we protect it?, 2018–2025, with its mark scheme and examiner’s report.

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1,448 questions

  1. Q7(b)(i)

    June 2025 · Paper 1 Foundation

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 7

  2. Q7(b)(ii)

    June 2025 · Paper 1 Foundation

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 7

  3. Q9(b)

    June 2025 · Paper 1 Foundation

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 9

  4. Q1(b)

    June 2025 · Paper 3 Higher

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 1

  5. Q5(a)

    June 2025 · Paper 3 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 5

  6. Q9(a)

    June 2025 · Paper 4 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 9

  7. Q9(b)

    June 2025 · Paper 4 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 9

  8. Q10(a)

    June 2024 · Paper 3 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 10

  9. Q10(b)

    June 2024 · Paper 3 Higher

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 10

  10. Q10(c)

    June 2024 · Paper 3 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 10

  11. Q6(c)

    June 2024 · Paper 4 Higher

    3 marksB6.4 How is biodiversity threatened and how can we protect it?B1.3 How can and should gene technology be used?
    The whole paper ↗
    The start of question 6

  12. Q12(a)(i)

    June 2023 · Paper 1 Foundation

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 12

  13. Q12(a)(ii)

    June 2023 · Paper 1 Foundation

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 12

  14. Q12(a)(iii)

    June 2023 · Paper 1 Foundation

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 12

  15. Q12(b)(i)

    June 2023 · Paper 1 Foundation

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 12

  16. Q12(b)(ii)

    June 2023 · Paper 1 Foundation

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 12

  17. Q2(a)(i)

    June 2023 · Paper 3 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 2

  18. Q2(a)(ii)

    June 2023 · Paper 3 Higher

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 2

  19. Q2(a)(iii)

    June 2023 · Paper 3 Higher

    1 markB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 2

  20. Q2(b)(i)

    June 2023 · Paper 3 Higher

    2 marksB6.4 How is biodiversity threatened and how can we protect it?
    The whole paper ↗
    The start of question 2
All 65 questions on How is biodiversity threatened and how can we protect it?, as a list
  1. June 2025, Paper 1 Foundation, Q7(b)(i) (2 marks): Explain what is meant by the term biodiversity. [2]
  2. June 2025, Paper 1 Foundation, Q7(b)(ii) (2 marks): State two reasons why conserving biodiversity is important. 1 2 [2]
  3. June 2025, Paper 1 Foundation, Q9(b) (1 mark): The African savannah elephant is an endangered species. Conservation efforts have been successful in increasing the number of elephants. Suggest one method that
  4. June 2025, Paper 3 Higher, Q1(b) (1 mark): The African savannah elephant is an endangered species. Conservation efforts have been successful in increasing the number of elephants. Suggest one method that
  5. June 2025, Paper 3 Higher, Q5(a) (2 marks): State two reasons why it is important to conserve biodiversity. 1 2 [2]
  6. June 2025, Paper 4 Higher, Q9(a) (2 marks): Suggest how climate change can reduce biodiversity. [2]
  7. June 2025, Paper 4 Higher, Q9(b) (2 marks): Table 9.1 shows data about two lakes in Kenya’s Rift Valley. Table 9.1 Year 2010 2014 2020 Surface area of Lake A (km2) 159.49 221.77 268.06 Surface area of Lak
  8. June 2024, Paper 3 Higher, Q10(a) (2 marks): State two differences between the projections made in 1975 and those made in 2020. 1 2 [2]
  9. June 2024, Paper 3 Higher, Q10(b) (1 mark): Suggest why the United Nations revises their projections regularly. [1]
  10. June 2024, Paper 3 Higher, Q10(c) (2 marks): Scientists are concerned about food security for future generations. Describe two biological factors that affect food security. 1 2 [2]
  11. June 2024, Paper 4 Higher, Q6(c) (3 marks): Carbon dioxide in the atmosphere is a greenhouse gas. Explain benefits to the environment of growing genetically engineered peas to make meat-free burgers, rath
  12. June 2023, Paper 1 Foundation, Q12(a)(i) (2 marks): Describe the trend in the data. [2]
  13. June 2023, Paper 1 Foundation, Q12(a)(ii) (1 mark): The government of the country started to protect areas of the rainforest and even paid people to regrow it. Suggest when the government started to do this. [1]
  14. June 2023, Paper 1 Foundation, Q12(a)(iii) (1 mark): Predict when the rainforest will reach the percentage land coverage seen in 1940, if it increases by the same rate as shown from 1997 to 2005. Predicted year =
  15. June 2023, Paper 1 Foundation, Q12(b)(i) (2 marks): Suggest why the government wants to continue to regrow the rainforest. [2]
  16. June 2023, Paper 1 Foundation, Q12(b)(ii) (2 marks): Suggest two challenges of regrowing the rainforest. 1. 2. [2]
  17. June 2023, Paper 3 Higher, Q2(a)(i) (2 marks): Describe the trend in the data. [2]
  18. June 2023, Paper 3 Higher, Q2(a)(ii) (1 mark): The government of the country started to protect areas of the rainforest and even paid people to regrow it. Suggest when the government started to do this. [1]
  19. June 2023, Paper 3 Higher, Q2(a)(iii) (1 mark): Predict when the rainforest will reach the percentage land coverage seen in 1940, if it increases by the same rate as shown from 1997 to 2005. Predicted year =
  20. June 2023, Paper 3 Higher, Q2(b)(i) (2 marks): Suggest why the government wants to continue to regrow the rainforest. [2]
  21. June 2023, Paper 3 Higher, Q2(b)(ii) (2 marks): Suggest two challenges of regrowing the rainforest. 1. 2. [2]
  22. June 2022, Paper 1 Foundation, Q8(c) (2 marks): Many marine ecosystems are threatened by human activity, such as overfishing. Suggest two ways in which humans can have a positive effect on these ecosystems. 1
  23. June 2022, Paper 3 Higher, Q11(b) (2 marks): The Zebra fish were modified because their embryos are very sensitive to water pollutants. When water pollutants are present, the fish glow. Suggest how scienti
  24. November 2021, Paper 1 Foundation, Q7(b)(i) (1 mark): How many Tasmanian devils were there in 1995? Number of Tasmanian devils = [1]
  25. November 2021, Paper 1 Foundation, Q7(b)(ii) (2 marks): In 2008 there were fewer Tasmanian devils. Calculate the difference in the population from 1995 to 2008. Difference = [2]
  26. November 2021, Paper 1 Foundation, Q7(c)(i) (2 marks): The decrease in population is because of a disease called Devil Facial Tumour disease. Explain why scientists are concerned about the population of Tasmanian de
  27. November 2021, Paper 1 Foundation, Q8(b) (2 marks): Humans use technology to help increase food production. Draw lines to connect each technology with the statement which explains how this improves food productio
  28. November 2021, Paper 1 Foundation, Q8(c) (1 mark): Give one way in which pesticides can reduce biodiversity. [1]
  29. November 2021, Paper 1 Foundation, Q8(d) (2 marks): Biofuel is now used in some vehicles as a fuel. It is made from plants. Burning biofuel releases carbon dioxide. However, biofuel is described as carbon neutral
  30. November 2021, Paper 3 Higher, Q7(a)(i) (3 marks): Plot a bar chart to represent the data shown in the table. [3]
  31. November 2021, Paper 3 Higher, Q7(a)(ii) (3 marks): Calculate the percentage decrease in the estimated population of Tasmanian devils between 1995 and 2008. Give your answer to 3 significant figures. Percentage d
  32. November 2021, Paper 3 Higher, Q8(b) (1 mark): Using insecticides is one method of controlling insect pests. Suggest one alternative method that could be used to control insect pests. [1]
  33. November 2021, Paper 3 Higher, Q8(c) (2 marks): The evolution of new pests is one example of a biological threat to food security. Identify two additional threats to food security. 1 2 [2]
  34. November 2020, Paper 1 Foundation, Q11(b) (1 mark): In 2015, humpback whales were removed from the endangered species list. Do you agree with this decision? Justify your answer using data from the table. [1]
  35. November 2020, Paper 1 Foundation, Q11(d) (1 mark): In 2018, Japan announced that it will start to hunt whales again. Use the data in the table to explain why scientists are concerned. [1]
  36. November 2020, Paper 2 Foundation, Q3(a) (2 marks): Which type of milk releases the most greenhouse gases per serving, and how much does it release? Type of milk = Greenhouse gases released per serving = kg [2]
  37. November 2020, Paper 2 Foundation, Q3(b) (2 marks): For his breakfast, Alex has sausages, tomatoes and coffee with cow’s milk. The total amount of greenhouse gases released by Alex’s breakfast is 3 kg. The amount
  38. November 2020, Paper 2 Foundation, Q3(c)(i) (3 marks): Explain why this change will reduce the effect his breakfast has on the environment. Use evidence from the graph to support your answer. [3]
  39. November 2020, Paper 2 Foundation, Q3(c)(ii) (2 marks): Scientists have lots of data on the amount of greenhouse gases released by the production of different foods. Give two reasons why it is important that scientis
  40. November 2020, Paper 2 Foundation, Q3(d) (4 marks): Greenhouse gases can cause changes in ecosystems. Explain why these changes could reduce our supply of food. [4]
  41. November 2020, Paper 3 Higher, Q2(b) (1 mark): In 2015, humpback whales were removed from the endangered species list. Do you agree with this decision? Justify your answer using data from the table. [1]
  42. November 2020, Paper 3 Higher, Q2(d) (1 mark): In 2018, Japan announced that it will start to hunt whales again. Use the data in the table to explain why scientists are concerned. [1]
  43. June 2019, Paper 1 Foundation, Q8(a) (4 marks): Draw a line from A, B, C and D to the correct name for the process shown in the diagram. A Condensation B Evaporation C Precipitation D Transpiration [4]
  44. June 2019, Paper 1 Foundation, Q8(b) (2 marks): Deforestation is happening to rainforests in Malaysia and Indonesia. Deforestation can affect the water cycle. Put a ring around the word that completes the sen
  45. June 2019, Paper 1 Foundation, Q8(c)(i) (1 mark): Choose one word from the list to complete the sentence. animals microorganisms organisms plants Biodiversity can be defined as the amount of living in a particu
  46. June 2019, Paper 1 Foundation, Q8(c)(ii) (1 mark): Biodiversity is important for economic, ethical and environmental reasons. For each statement in the table, decide if it is an example of an economic, ethical o
  47. June 2019, Paper 1 Foundation, Q8(d) (2 marks): The palm oil taken from the trees is used in different ways. The bar chart shows changes in the uses of palm oil between 2010 and 2014. Key biofuel electricity
  48. June 2019, Paper 1 Foundation, Q8(e)(i) (3 marks): Calculate the percentage (%) of orangutans which remain today. Give your answer to 2 significant figures. Percentage = % [3]
  49. June 2019, Paper 1 Foundation, Q8(e)(ii) (1 mark): The number of orangutans living in the rainforests of Malaysia is only an estimate. Explain why. [1]
  50. June 2019, Paper 2 Foundation, Q3(a)(i) (2 marks): Which type of plastic litter takes the longest time to break down, and how long does it take? type of plastic litter time taken to break down years [2]
  51. June 2019, Paper 2 Foundation, Q3(a)(ii) (1 mark): A crisp packet takes 80 years to break down in the sea. Which types of litter, shown on the bar chart, will break down faster than a crisp packet? Tick (✓) two
  52. June 2019, Paper 2 Foundation, Q3(c) (3 marks): Scientists have discovered some bacteria in a rubbish dump. These bacteria break down plastic into very small pieces. The pieces can be used to make new plastic
  53. June 2019, Paper 3 Higher, Q4(a)(i) (2 marks): Some people talk about this. Mia Alex I don’t think it matters if rainforests Palm oil trees will remove are replaced with palm oil trees carbon dioxide out of
  54. June 2019, Paper 3 Higher, Q4(a)(ii) (2 marks): Describe the effect deforestation can have on climate change. [2]
  55. June 2019, Paper 3 Higher, Q4(c)(i) (3 marks): Calculate the percentage (%) of orangutans which remain today. Give your answer to 2 significant figures. Percentage = % [3]
  56. June 2019, Paper 3 Higher, Q4(c)(ii) (1 mark): The number of orangutans living in the rainforests of Malaysia is an estimate. Explain why. [1]
  57. June 2018, Paper 1 Foundation, Q7(a)(i) (3 marks): Describe and explain the trend shown in the graph. [3]
  58. June 2018, Paper 1 Foundation, Q7(a)(ii) (1 mark): In 2002 very little cod was served in fish and chip shops, instead haddock was used. Use the graph to explain why cod was removed from the menu. [1]
  59. June 2018, Paper 1 Foundation, Q7(a)(iii) (2 marks): Human activities are having an impact on the biodiversity of the Earth. Explain why it is important to conserve biodiversity. [2]
  60. June 2018, Paper 2 Foundation, Q2(b) (2 marks): Explain why a farmer would want to use neonics to kill insects that live on their crops. [2]
  61. June 2018, Paper 2 Foundation, Q2(d)(iii) (3 marks): Do you support the continued use of neonics on flowering crops? Justify your answer. [3]
  62. June 2018, Paper 4 Higher, Q3(b)(i) (2 marks): The graph shows an overall increase in ocean surface temperature from 1982 to 2012. Describe two other patterns that are visible in the ocean surface temperatur
  63. June 2018, Paper 4 Higher, Q3(b)(ii) (2 marks): Scientists say long-term studies are needed when investigating the effects of climate change. Use evidence from the graph to justify the scientists’ view. [2]
  64. June 2018, Paper 4 Higher, Q3(b)(iii) (2 marks): Calculate the overall rate of change in the ocean surface temperature from 1982 to 2012. Overall rate of change = °C per year [2]
  65. June 2018, Paper 4 Higher, Q3(b)(iv) (2 marks): Predict how the line on the graph may have looked in the five years after 2012, and explain what this would have meant for coral in the Cayman Islands. [2]

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