Each lion eats many zebras during its lifetime, yet a savanna supports far fewer lions than zebras.
Which statement explains this?
Lions respire less than zebras, so each lion needs less food
Zebras reproduce faster because they feed directly on producers
Most of the biomass in the zebras eaten does not become lion biomass
Lions are apex predators, so nothing limits the size of their population
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.