0654.B19.1.01 — Describe an ecosystem as a unit containing the community of organisms and their environment, interacting together: past paper questions

Real questions on 0654.b19.1.01 — describe an ecosystem as a unit containing the community of organisms and their environment, interacting together

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

1. 0973/41 · October/November 2023 · Q10b[2]

   The area in Fig. 10.1 can be described as an ecosystem. Define the term ecosystem.

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2. 0973/41 · October/November 2023 · Q10c[1]

   State the principal source of energy input into the ecosystem.

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3. 0973/41 · May/June 2021 · Q10a[4]

   Fig. 10.1 is a flowchart showing the process of eutrophication. Complete the flowchart in Fig. 10.1. increase of excess fertiliser used on soil ions in increase growth of surface plants the water light is blocked from the plants under the surface plants can no longer dead plants are so they die by bacteria dissolved ba...

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4. 0973/41 · May/June 2021 · Q10d[1]

   Trees make their own organic nutrients through photosynthesis. State the term used to describe organisms that make their own nutrients.

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5. 0973/42 · May/June 2020 · Q7b[3]

   Table 7.1 shows definitions for three terms related to the environment. Complete Table 7.1 by adding the term that matches each definition. Table 7.1 definition term a network of interconnected food chains an organism that makes its own organic nutrients an organism that gets its energy from dead or waste organic matte...

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6. 0973/41 · May/June 2019 · Q4d[2]

   Forests are ecosystems. Define the term ecosystem.

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What examiners said

Many candidates did not give a complete definition of an ecosystem as a unit containing all of the organisms and their environment interacting together in a given area. These candidates did not include the idea of the environment or of the organisms interacting together.

— Examiner report, October/November 2023, 0973/41 Q10(b) (Cambridge)

Many candidates stated that the Sun is the principal source of energy in the ecosystem, but some candidates only mentioned that light is involved. Other candidates thought that the principal source of energy are the green plants or producers.

— Examiner report, October/November 2023, 0973/41 Q10(c) (Cambridge)

The eutrophication flow chart was often completed correctly. The most common error was the nature of the ions involved, with nitrogen ions suggested rather than nitrate ions.

— Examiner report, May/June 2021, 0973/41 Q10(a) (Cambridge)