Describe5 marksStandard
A student investigated the effect of light intensity on the rate of photosynthesis in the aquatic plant Elodea. The student placed a piece of Elodea in a beaker of water and counted the number of bubbles of oxygen produced per minute at different distances from a lamp. The results are shown in the table.
| Distance from lamp (cm) | Light intensity (arbitrary units) | Bubbles per minute |
|---|---|---|
| 100 | 1 | 2 |
| 80 | 2 | 4 |
| 60 | 4 | 8 |
| 40 | 8 | 16 |
| 20 | 16 | 20 |
| 10 | 32 | 22 |
| 5 | 64 | 22 |
Describe how and why the rate of photosynthesis changes as light intensity increases. Use the data to support your answer.