Cells in a moss leaf are photosynthesising in bright light.
During the first stage of photosynthesis, which change supplies the substance that is then used to build glucose in the second stage?
Water is split, releasing hydrogen.
Carbon dioxide is split, releasing oxygen.
Carbon dioxide is split, releasing carbon.
Glucose is split, releasing hydrogen.
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.