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7.2 Organisation of an ecosystem

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Question 4

Biologists make these observations in a woodland:

  • Blue tits eat caterpillars.
  • Sparrowhawks eat blue tits.
  • Caterpillars feed on leaves from an oak tree.

Which organism should be placed first in a food chain made from these observations?

[1]
A

Sparrowhawk, because biomass is transferred towards it in this food chain

B

Blue tit, because it transfers biomass between two animal species

C

Oak tree, because it supplies the biomass entering this food chain

D

Caterpillar, because it is the first animal to feed in this food chain

Markscheme

7.2 Organisation of an ecosystem Questions

  1. GCSE
  2. /Biology
  3. /7.2 Organisation of an ecosystem

83 exam-style questions on AQA GCSE Biology 7.2 Organisation of an ecosystem, covering 7.2.1 Levels of organisation, 7.2.2 How materials are cycled, 7.2.3 Decomposition, and 7.2.4 Impact of environmental change (HT only). Each one has a worked solution and a mark scheme showing where the marks go.

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