Photosynthesis is described as an endothermic reaction. Which statement explains why?
It releases energy to the surroundings as heat.
It takes in carbon dioxide from the air around the leaf.
It releases oxygen into the air around the leaf.
It takes in energy from the surroundings as light.
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.