To Investigate The Effect Of Light Intensity On The Rate Of Photosynthesis.

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To Investigate The Effect Of Light Intensity On The Rate Of Photosynthesis

Introduction

We were set an experiment to investigate the effect of light intensity on the rate of photosynthesis; we did this by using an angle poised lamp and shining it on a beaker with some Elodea Cana Densis (Canadian pond weed) in it, measured distances from the bulb to the beaker and counted how many bubbles floated above a marked point on the beaker. Plotted a graph from these results and drew a line of best fit.

           Carbon              Sunlight

                    + Water        Glucose + Oxygen        

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           Dioxide            Chlorophyll

         6CO2 + 6H2O                        C6H12O6 + 6O2

Apparatus:                     

                 Beaker

                 Spatula    

                 Stopwatch

                   Bulldog Clips

         Canadian Pond Weed

          Sodium Hydrogen Carbonate

          Angle Poised Lamp – 60 Watts

Prediction

I predict that the closer the lamp ...

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