Photosynthesis Lab: Elodea and Carbon Dioxide
In this lab titled "The Elodea Took My Breath Away!" students will be able to "see" photosynthesis in action as colors change (or don't) using Elodea, bromothymol blue, and carbon dioxide.
This is a 3 page lab with background info, materials list, clear procedure, data tables/analysis. This can also be done as a demonstration that you, the teacher, can set up beforehand to show the class if you do not have the time or materials.
Bromothymol blue is a biological indicator, it changes from blue to yellow in the presence of acid. Some materials required for this lab are Elodea, soda straws, graduated cylinders and stirring rods.
Answer key is included.
Other photosynthesis resources for you:
Vanessa Jason ("Biology Roots")