A fox swallows pheasant tissue. Much of this biomass does not become new fox tissue.
Which statement correctly links two processes with the fate of this biomass?
Undigested pheasant material is egested in faeces, and biomass used in respiration leaves the fox as carbon dioxide and water.
Urea from pheasant material is egested in faeces, and the products of respiration leave the fox in urine.
Absorbed pheasant material is egested in faeces, and respiration uses undigested food to release energy.
Undigested pheasant material is egested in faeces, and respiration converts absorbed biomass into new fox tissue.
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.