A student investigated the effect of light intensity on the rate of photosynthesis in the aquatic plant Elodea canadensis at two different temperatures, 15°C and 25°C. The rate of photosynthesis was measured by counting the number of oxygen bubbles produced per minute. The results are shown in the table below.
| Light intensity (arbitrary units) | Rate of photosynthesis (bubbles per minute) at 15°C | Rate of photosynthesis (bubbles per minute) at 25°C |
|---|---|---|
| 0 | 0 | 0 |
| 50 | 10 | 12 |
| 100 | 18 | 24 |
| 200 | 22 | 30 |
| 400 | 23 | 31 |
Explain the effects of light intensity and temperature on the rate of photosynthesis, using the data.