Ticks are small animals that live on the skin of cattle. Ticks feed on the blood of the cattle.
Oxpeckers are birds that land on cattle and eat the ticks.
Name the type of relationship between the ticks and the cattle.
The relationship between the oxpeckers and the cattle is an example of mutualism.
Explain why.
A farmer sprays all of his cattle with a chemical that kills ticks.
Suggest and explain the effect this would have on the number of oxpeckers on the farm.
Oxpeckers compete with each other.
Give two resources that animals compete for.
111 exam-style questions on OCR GCSE Biology 4.1 Ecosystems, covering 4.1.1 Cycling of materials in ecosystems, 4.1.2 Microorganisms in cycling materials, 4.1.3 The carbon and water cycles, 4.1.4 Factors affecting decomposition, 4.1.5 Levels of organisation in an ecosystem, 4.1.6 Abiotic and biotic factors affecting communities, 4.1.7 Interdependence and competition, 4.1.8 Trophic levels, 4.1.9 Pyramids of biomass, and 4.1.10 Efficiency of biomass transfers. Each one has a worked solution and a mark scheme showing where the marks go.