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7.4 Trophic levels in an ecosystem

7.4 Trophic levels in an ecosystem

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Question 17
F

Why is only a small part of the biomass eaten by a herbivore used to make new tissue?

[1]
A

Most of the food is used to keep the animal warm and the rest is lost in faeces.

B

Some of the food is not eaten and the rest is broken down by decomposers in the gut.

C

Most of the food is changed into urea, which is then stored in the body of the animal.

D

Some of the food is not absorbed and much of what is absorbed is used in respiration.

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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