plumiBiodiversity and food security: Edexcel GCSE Combined Science questions
Every Edexcel GCSE Combined Science exam question on Biodiversity and food security (specification points 9.9–9.10), 2018–2025, with its mark scheme and examiner’s report.
Paper
All papers
Exam
All years
Calculations
Q2(a)(i)
The whole paper ↗Q3(b)(ii)
The whole paper ↗Q3(c)(i)
The whole paper ↗Q3(c)(ii)
The whole paper ↗Q3(c)(iii)
The whole paper ↗Q6(a)(i)
The whole paper ↗Q4(a)(i)
The whole paper ↗Q4(a)
The whole paper ↗Q4(b)(i)
The whole paper ↗Q4(b)(ii)
The whole paper ↗Q4(c)(ii)
The whole paper ↗Q6(b)
The whole paper ↗Q6(c)
The whole paper ↗Q4(b)
The whole paper ↗Q2(c)(i)
The whole paper ↗Your answerQ1(c)
The whole paper ↗Q5(c)(i)
The whole paper ↗Q5(c)(ii)
The whole paper ↗
All 18 questions on Biodiversity and food security, as a list
- June 2025, Biology Paper 2 Higher, Q2(a)(i) (1 mark): State what is meant by the term ’indigenous’. (1)
- June 2025, Biology Paper 2 Foundation, Q3(b)(ii) (1 mark): Some of the nitrates spread on fields as fertiliser get into lakes. Name the type of pollution caused by the build-up of nitrates in lakes. (1)
- June 2025, Biology Paper 2 Foundation, Q3(c)(i) (2 marks): Figure 6 shows a bar chart for the algae in lakes X, Y and Z. Complete the bar chart for algae L and algae M in lake Z. (2) 20 15 number of 10 algae 5 0 K L M K
- June 2025, Biology Paper 2 Foundation, Q3(c)(ii) (2 marks): State two conclusions about the relationship between nitrate concentration and the algae in these lakes. (2) 1 2
- June 2025, Biology Paper 2 Foundation, Q3(c)(iii) (1 mark): A build-up of algae on the surface of the lake can affect plants growing at the bottom of the lake. Which statement shows how this would affect the plants at th
- June 2025, Biology Paper 2 Foundation, Q6(a)(i) (1 mark): State what is meant by the term ‘indigenous’. (1)
- June 2023, Biology Paper 1 Higher, Q4(a)(i) (3 marks): Calculate the percentage increase in the number of males from 1997 to 2021. (3) % The bitterns are difficult to see in the reeds of the wetland habitat.
- June 2023, Biology Paper 2 Foundation, Q4(a) (1 mark): Why were indigenous trees used instead of non-indigenous trees? (1) A indigenous trees will bring in more pests B indigenous trees are less likely to survive C
- June 2023, Biology Paper 2 Foundation, Q4(b)(i) (1 mark): Draw a straight line of best fit on Figure 8 to show the main trend in this data. (1)
- June 2023, Biology Paper 2 Foundation, Q4(b)(ii) (1 mark): Estimate the animal biodiversity of the reforested area in 2022. (1)
- June 2023, Biology Paper 2 Foundation, Q4(c)(ii) (1 mark): State why point A on Figure 8 was ignored when considering the trend in animal biodiversity. (1)
- June 2022, Biology Paper 2 Higher, Q6(b) (2 marks): This pond is affected by eutrophication. Explain one possible cause of eutrophication. (2)
- June 2022, Biology Paper 2 Higher, Q6(c) (6 marks): Reforestation has a beneficial effect on air composition and biodiversity. Animal conservation projects can also have a beneficial effect on biodiversity. Expla
- June 2022, Biology Paper 2 Foundation, Q4(b) (3 marks): Increased nitrates can cause eutrophication in lakes. Explain how eutrophication will affect the fish living in the lakes. (3)
- November 2021, Biology Paper 2 Foundation, Q2(c)(i) (1 mark): Flatworms from New Zealand that eat slugs are now living in the UK. Which term describes a species from one country that is living in another country? (1) A pat
- November 2020, Biology Paper 2 Higher, Q1(c) (3 marks): Figure 2 shows water lilies growing in a lake in Europe. © lynn gladwell/123RF Figure 2 One water lily plant was brought from America 10 years ago and planted i
- November 2020, Biology Paper 2 Foundation, Q5(c)(i) (3 marks): One water lily plant was brought from America 10 years ago and planted in the lake shown in Figure 11. Explain why this non‑indigenous plant now covers the whol
- November 2020, Biology Paper 2 Foundation, Q5(c)(ii) (3 marks): Explain how the water lilies will affect the biodiversity of this lake. (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? Full past papers.
Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.