13. Two students conducted an investigation in which they studied the effect of light intensity
on the rate of photosynthesis of an aquatic plant. To determine the rate of
photosynthesis, they counted the number of bubbles of oxygen produced in the water.
The set up of the experiment is shown in the diagram below. The results of their
experiment are shown in the data table.
Data Table 1
Light Intensity
(Candelas)
0
Rate of Photosynthesis
(Bubbles per Min)
0
400
1
800
2
1200
3
Photosynthesis Experiment
1600
4
2000
6
Lamp
Test tube
2400
6
Gas
2800
6
Water
3200
6
Funnol
3600
6
Green water plant
4000
6
*Candela is the unit of measurement for light intensity.