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7.4 Trophic levels in an ecosystem

7.4 Trophic levels in an ecosystem

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Question 27
H

In a meadow, the biomass of the producers is 2.4 × 106 g.

The biomass of the primary consumers is 1.8 × 104 g.

What is the efficiency of biomass transfer from the producers to the primary consumers?

[1]
A

0.0075%

B

0.75%

C

7.5%

D

133%

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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