Explain6 marksChallenge
A student investigated the effect of light intensity on the rate of photosynthesis in an aquatic plant, Elodea canadensis, at two different temperatures. The rate was measured as the volume of oxygen produced per hour. The results are shown in the table.
| Light intensity (μmol m⁻² s⁻¹) | Rate of photosynthesis (arbitrary units) at 15°C | Rate of photosynthesis (arbitrary units) at 25°C |
|---|---|---|
| 50 | 10 | 15 |
| 100 | 18 | 30 |
| 200 | 25 | 45 |
| 400 | 30 | 50 |
| 800 | 32 | 52 |
| 1200 | 32 | 52 |
Explain the results shown in the table. Use the concept of limiting factors in your answer.