Skip to content

Course home

7.4 Trophic levels in an ecosystem

7.4 Trophic levels in an ecosystem

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435
Question 5
F

The biomass of the producers in a field is 2.5 kg/m2 .

The biomass of the primary consumers in the same field is 200 g/m2 .

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

[1]
A

0.08%

B

8%

C

12.5%

D

80%

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.

Question bank