A researcher investigated the effect of carbon dioxide concentration on the rate of photosynthesis in a suspension of the unicellular green alga Chlorella by measuring the volume of oxygen gas evolved.
Table 1 shows the results of this experiment.
Table 1
| Carbon dioxide concentration (ppm) | Volume of oxygen gas produced in 15 minutes (cm3\text{cm}^3cm3) |
|---|---|
| 150 | 2.4 |
| 300 | 4.8 |
| 450 | 7.1 |
| 600 | 8.9 |
| 750 | 10.2 |
| 900 | 11.0 |
Describe the effect of carbon dioxide concentration on the volume of oxygen gas produced. Use values from Table 1 in your answer.
