The newest 6 of 6 written questions. Open one to see it on the real paper.
Complete the sentence to describe an ecosystem. Use words from the list. Each word may be used once, more than once or not at all. community environment genes reflexes tissues ecosystem unit containing organisms their interacting together.
See it on the paper →Circle the word that describes a unit containing a community of organisms and their environment interacting together. biodiversity ecosystem habitat population
See it on the paper →What is an example of an ecosystem?
See it on the paper →A scientist compares the relative concentrations of bacteria and dissolved oxygen in a river before and after fertiliser is added. Fig. 4.1 is a graph of the results. relative concentration dissolved oxygen bacteria distance downriver fertiliser enters river Fig. 4.1 Complete the sentences to describe and explain the c...
See it on the paper →Complete the definition of the term ecosystem. An ecosystem is defined as a unit containing all of the and their environment, together, in a given area.
See it on the paper →Which source is shown with a statement of whether it is renewable and whether it is reliable at all times?
See it on the paper →Comprehensive responses • Most candidates identified the term ecosystem. Limited responses • A few candidates identified the term community instead of the term ecosystem.
— Examiner report, February/March 2026, 0654/42 Q4(a)(i) (Cambridge)
Many fully correct responses. Another example of where learning definitions is very helpful. A fairly common error was to state just ‘respiration’ rather than aerobic respiration.
— Examiner report, October/November 2023, 0654/43 Q4(a) (Cambridge)
This question required candidates to fill in missing keywords in the definition of an ecosystem. Few candidates correctly identified ‘organisms’ and ‘interacting’ as given in the definition found in the syllabus, instead using words such as ‘species’ and ‘living’ which was not sufficient to gain credit.
— Examiner report, October/November 2021, 0654/43 Q4(a) (Cambridge)
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