You performed an experiment on photosynthesis on Elodea, using bromothymol blue as an indicator for pH. Your two light conditions were red light and blue light. You found that in blue light, your solution turned a nice cobalt blue, and in red light it turned green.
You performed an experiment on photosynthesis on Elodea, using bromothymol blue as an indicator for
pH. Your two light conditions were red light and blue light. You found that in blue light, your solution
turned a nice cobalt blue, and in red light it turned green.
a. What can you conclude about the efficiency of photosynthesis in Elodea regarding those two
wavelengths?
b. What would your conclusion be if your negative control (no Elodea in white light) turned green
also?
Photosynthesis is a necessary process for all plants to live. Plants create sugars (which are stored in various sections of the plant) and release oxygen by utilising light energy and carbon dioxide from the atmosphere. Sugars are utilised to store chemical energy and are created from water and carbon dioxide.
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