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Paper 6Alternative to PracticalPractical1 marks
Investigating the effect of light intensity on the rate of photosynthesis in aquatic plants.
Method
Method to Investigate Photosynthesis
1. Set up a beaker with water and a sprig of Elodea. 2. Place a lamp at varying distances from the beaker. 3. Count the number of oxygen bubbles produced in one minute at each distance.
| Distance from lamp (cm) | Number of bubbles produced |
|---|---|
| 10 | 15 |
| 20 | 10 |
| 30 | 5 |
- a[1]
State the independent variable in this investigation.
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