How can you measure the rate of photosynthesis depending on the light intensity?

Question

what results would be expected from this?

Answer 1

Depends on the plant you are using. If you are using an aquatic plant that can be submerged, it's pretty easy to measure the change in carbon dioxide with a closed container and a carbon dioxide probe connected to a sensor. With more light, you would expect to see a more rapid drop in carbon dioxide.

If you don't have access to sensors, you can submerge an aquatic plant upside down and count the number of bubbles per minute that emerge from a crushed stem end. The bubbles will be oxygen produced during photosynthesis. With greater light intensity, you would expect to see more rapid bubble production.