A conservation research team measured the rate of photosynthesis in equal areas of leaves from the same alpine plant species. Separate plants were kept at each temperature. Light intensity and carbon dioxide concentration were kept the same.
| Temperature in ∘C^\circ\text{C}∘C | Rate of photosynthesis in cm3 oxygen min−1\mathrm{cm^3\,oxygen\,min^{-1}}cm3oxygenmin−1 |
|---|---|
| 20 | 0.7 |
| 30 | 1.4 |
| 50 | 0.2 |
Explain the results shown in the table.
Predict what would happen to the rate if the plants were kept at 55 ∘C55\,^\circ\text{C}55∘C. Explain your answer.
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.