A student supplies bean plants with air containing different concentrations of carbon dioxide. The plants are kept in the light.
Which measurement gives the rate of photosynthesis?
the concentration of carbon dioxide in the air supplied to each plant
the mass of glucose in each plant at the end of the investigation
the volume of carbon dioxide released by each plant per minute
the volume of carbon dioxide taken up by each plant per minute
87 exam-style questions on Edexcel GCSE Biology 6.1 Photosynthesis, covering 6.1.1 Photosynthetic organisms as producers, 6.1.2a Limiting factors on the rate of photosynthesis, 6.1.2b Interactions of limiting factors on photosynthesis, and 6.1.3 Inverse square law and light intensity. Each one has a worked solution and a mark scheme showing where the marks go.