IGCSE Combined Science 0653 · Biology · 83

0653.B15.2.01 — Describe a food chain as showing the transfer of energy from one organism to the next, beginning with a producer: past paper questions

6 real questionsasked in 4 of the last 10 exam series2023–2025usually: Identify, Draw

Real questions on 0653.b15.2.01 — describe a food chain as showing the transfer of energy from one organism to the next, beginning with a producer

The newest 6 of 6 written questions. Open one to see it on the real paper.

0653/32 · February/March 2025 · Q1c(i)[1]
Identify the food source for the human in Fig. 1.2.
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0653/32 · February/March 2025 · Q1c(ii)[1]
Identify the producer in Fig. 1.2.
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0653/33 · October/November 2024 · Q7b(i)[2]
Construct a food chain using all the organisms in Fig. 7.1.
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0653/33 · October/November 2024 · Q7b(ii)[1]
Identify the primary consumer in Fig. 7.1.
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0653/43 · May/June 2024 · Q7c(i)[1]
Identify all the organisms in Fig 7.2 that occupy trophic level 2.
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0653/42 · May/June 2023 · Q1a[2]
Draw a food chain using the information in Fig. 1.1.
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What examiners said

This was answered well, using the arrow as an indication of the direction of flow of chemical energy.
— Examiner report, February/March 2025, 0653/32 Q1(c)(i) (Cambridge)

This was a well-answered question. Candidates knew to look for the source of chemical energy for the food web, the phytoplankton.
— Examiner report, February/March 2025, 0653/32 Q1(c)(ii) (Cambridge)

Practise this topic

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Practise 0653.b15.2.01 — describe a food chain as showing the transfer of energy from one organism to the next, beginning with a producer

In the syllabus

83 0653.B15.2.01 — Describe a food chain as showing the transfer of energy from one organism to the next, beginning with a producer

Describe a food chain as showing the transfer of energy from one organism to the next, beginning with a producer
Construct and interpret simple food chains
Describe a food web as a network of interconnected food chains and interpret food webs
Describe a producer as an organism that makes its own organic nutrients, usually using energy from sunlight, through photosynthesis
Describe a consumer as an organism that gets its energy by feeding on other organisms
State that consumers may be classed as primary, secondary and tertiary according to their position in a food chain
Describe a herbivore as an animal that gets its energy by eating plants
Describe a carnivore as an animal that gets its energy by eating other animals
Describe a decomposer as an organism that gets its energy from dead or waste organic material
Use food chains and food webs to describe the impact humans have through overharvesting of food species and through introducing foreign species to a habitat

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