Beetles eat the leaves of a plant. Birds eat these beetles and also disperse the plant's seeds.
Scientists exclude birds from an area. They predict that the number of new plants will fall. Another scientist claims that killing the beetles in this area would completely prevent the fall.
Which assessment of this claim is best supported?
It is supported: reducing leaf damage restores both plant growth and seed dispersal.
It is unsupported: reducing leaf damage leaves the loss of seed dispersal unresolved.
It is supported: removing beetles replaces both bird feeding and bird seed dispersal.
It is unsupported: removing beetles leaves the increase in leaf damage unresolved.
63 exam-style questions on AQA GCSE Biology 7.1 Adaptations, interdependence and competition, covering 7.1.1 Communities, 7.1.2 Abiotic factors, 7.1.3 Biotic factors, and 7.1.4 Adaptations. Each one has a worked solution and a mark scheme showing where the marks go.