Equal masses of the same species of alga live in two shallow pools beneath layers of ice. All other conditions in the pools are the same.
The table shows the percentage of incident light transmitted by each ice layer and the mean volume of oxygen released by the algae in 40 minutes.
| Pool | Light transmitted by ice (%) | Mean volume of oxygen released in 40 minutes (cm³) |
|---|---|---|
| P | 76 | 8.6 |
| Q | 38 | 4.4 |
Explain why the algae in pool P are likely to increase in biomass more quickly than the algae in pool Q. Use the information in the table.
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.