Modern high-yield crop plants, such as wheat, are produced by selective breeding. What determines which plants reproduce to create the next generation during selective breeding?
Environmental factors select the best-adapted individual plants.
Humans choose which plants to cross-pollinate based on desired characteristics.
Wind and insects randomly determine which plants are fertilized.
The plants with the most aggressive seed dispersal mechanisms reproduce successfully.
38 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.