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Rate of Photosynthesis Investigation

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Rate of Photosynthesis In this experiment I will be investigating the effect of light intensity on the rate of photosynthesis. The variables available to me are: * Distance of light source from plant * The wattage of the lamp * The amount of leaves * Size of Elodea plant The variable I am going to investigate is the distance of the light source from the plant as it is the easiest variable to measure. ...read more.


the rate of bubbles produced, I think this because at some point there will be some other limiting factor that will make a difference to the rate. Results Group A Distance from Plant (cm) 20 40 60 80 100 120 Bubbles in ten minutes 160 80 52 30 24 12 Group B Distance from Plant (cm) 20 40 60 80 100 120 Bubbles in ten minutes 190 105 62 24 12 0 Group C Distance from Plant (cm) ...read more.


The rate increases at a steady rate as the light intensity increases until it reaches a certain point on the graph and then stops. This makes my prediction correct. Evaluation I could have made my experiment more fair by: * Repeating the experiment several times so that any mistakes in one experiment can be fixed by the other results. * All groups should have used the same Elodea plant. * All other possible light sources should have been ensured they could not effect the results. ...read more.

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