0654.B18.2.10 — Use food chains and food webs to describe the impact humans have through overharvesting of food species and through introducing foreign spec: past paper questions
Real questions on 0654.b18.2.10 — use food chains and food webs to describe the impact humans have through overharvesting of food species and through introducing foreign spec
The newest 6 of 6 written questions. Open one to see it on the real paper.
- 0654/33 · May/June 2026 · Q4a[1]
Place ticks (“) to show all the words which describe the Sumatran tiger. producer consumer herbivore carnivore decomposer
See it on the paper → - 0654/33 · May/June 2026 · Q4b[1]
The Sumatran tiger is also part of a food web. Describe what is meant by a food web.
See it on the paper → - 0654/43 · October/November 2025 · Q4c(i)[1]
Many bacteria are decomposers in food chains. Describe what is meant by a decomposer.
See it on the paper → - 0654/43 · October/November 2025 · Q4c(ii)[2]
Energy in food chains is lost through processes such as excretion of urea. State two other ways that energy is lost between one trophic level and the next.
See it on the paper → - 0654/43 · May/June 2019 · Q4a(i)[1]
State the number of trophic levels in this food web.
See it on the paper → - 0654/43 · May/June 2019 · Q4a(iii)[2]
Construct a food chain that includes one tertiary consumer.
See it on the paper →
What examiners said
Most candidates counted the number of trophic levels correctly.
— Examiner report, May/June 2019, 0654/43 Q4(a)(i) (Cambridge)
Many candidates constructed a food chain to include a tertiary consumer. They gained credit if they followed the instruction in the stem of the question and drew a food chain originating from the food web in the figure.
— Examiner report, May/June 2019, 0654/43 Q4(a)(iii) (Cambridge)
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