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7.4 Trophic levels in an ecosystem

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Question 13

In a culture tank, algae have a total biomass of 8.0 × 104 g.

Brine shrimp feed on the algae. The efficiency of biomass transfer from the algae to the brine shrimp is 7.5%.

What biomass is transferred to the brine shrimp?

[1]
A

8.6×1048.6 \times 10^48.6×104 g

B

7.4×1047.4 \times 10^47.4×104 g

C

6.0×1036.0 \times 10^36.0×103 g

D

1.1×1041.1 \times 10^41.1×104 g

Markscheme

7.4 Trophic levels in an ecosystem Questions

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

103 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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