Investigating Factors Affecting Photosynthesis

BiologyHS/ScienceUnit: 05 Lesson: 01Write your experimental design in your science notebooks. Include a diagram showing the setup ofyour experiment, describing how and what you will measure during your experiment. Your teachermust approve your experimental design before you can conduct your experiment. When yourexperimental design is approved, set up your experiment and collect your data.Test Tube Setup:The standard setup for a test tube (the control) for this experiment is as follows:1. Fill a test tube about ¾ full with 1% sodium bicarbonate solution (baking soda solution).2. Remove the leaves around the very bottom of one sprig of Elodea. Crush the stem end, thenplace the Elodea into the test tube, as demonstrated by your instructor.3. Place a stopper in the test tube.Data Collection:Determine the best equipment and procedure to collect your data. Design and label a data table inyour science notebooks to record your data. Use your data to create an appropriate graph to helpexplain the results of your experiment.Results/Analysis:In your science notebook, explain the results of your experiment and what you learned about how thefactor you chose affects the rate of photosynthesis.©2012, TESCCC 08/23/12 page 2 of 2