Which statement describes what happens in the first stage of photosynthesis?
Light energy is used to split water into hydrogen and oxygen.
Light energy is used to split carbon dioxide into carbon and oxygen.
Glucose molecules are joined together to make starch for storage.
Oxygen and hydrogen are joined together to make molecules of water.
117 exam-style questions on OCR GCSE Biology 1.4 Photosynthesis, covering 1.4.1 Photosynthesisers as biomass producers, 1.4.2 Factors affecting the rate of photosynthesis, and 1.4.3 Limiting factors in photosynthesis. Each one has a worked solution and a mark scheme showing where the marks go.