Which method uses biological control to reduce crop damage?
Spraying insecticide that kills pests on crop leaves.
Releasing predatory mites that feed on crop pests.
Growing crop plants that contain an insect-resistance gene.
Spreading fertiliser that replaces minerals in the soil.
44 exam-style questions on Edexcel GCSE Biology 4.3 Selective breeding and genetic modification, covering 4.3.1 Selective breeding and its impact, 4.3.2 Tissue culture, 4.3.3 Genetic engineering overview, 4.3.4 Main stages of genetic engineering, 4.3.5 Advantages and disadvantages of GM organisms, 4.3.6 Agricultural solutions for a growing population, and 4.3.7 Evaluating genetic engineering and breeding. Each one has a worked solution and a mark scheme showing where the marks go.