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7.4 Trophic levels in an ecosystem

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Question 19
H

A field has an area of 5000 m2. The plants growing in the field produce 800 g of new biomass per square metre each year.

a.

Calculate the total biomass produced by the plants in the field in one year. Give your answer in kilograms.

[2]
b.

Rabbits feed on the plants in the field. The rabbits transfer 9% of the biomass produced by the plants into new rabbit tissue. Calculate the mass of new rabbit tissue produced in one year.

[2]
Markscheme

7.4 Trophic levels in an ecosystem Questions

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

40 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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