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7.4 Trophic levels in an ecosystem

7.4 Trophic levels in an ecosystem

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Question 14
F

A pond contains 4000 g of algae. The primary consumers that feed on the algae have a total biomass of 320 g. What percentage of the biomass in the algae has been transferred to the primary consumers?

[1]
A

0.8%

B

8.0%

C

12.5%

D

80.0%

Markscheme

7.4 Trophic levels in an ecosystem Questions

  1. GCSE
  2. /Biology
  3. /7.4 Trophic levels in an ecosystem

61 exam-style questions on AQA GCSE Biology 7.4 Trophic levels in an ecosystem, covering 7.4.1 Trophic levels, 7.4.2 Pyramids of biomass, and 7.4.3 Transfer of biomass. Each one has a worked solution and a mark scheme showing where the marks go.

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