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Rate of photosynthesis experiment
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| Submitted: Thu Jul 11 2002
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Stuart Green 11AK Rate of photosynthesis experiment Aim: To investigate whether wavelength affects the rate of photosynthesis. 6CO2 + 6H2O light energy & chlorophyll C6H12O6 + 6O2 Variables: Dependant Variable- Wavelength of light is to be the variable explored in this investigation. Changing the wavelength of the light source to the plant should vary the rate of photosynthesis. Light Wavelength (colour)- Light energy is absorbed by pigments in the leaf such as chlorophyll. Chlorophyll easily absorbs blue light, in the 400-450 nm range, and also easily absorbs red light in the 650-700 nm range. Chlorophyll does not absorb green light or yellow light effectively but tends to reflect them, decreasing the amount of light absorbed and decreasing the rate of photosynthesis. Why the rate of photosynthesis increases or decreased from the amount of light energy absorbed is what is being investigated in this experiment. The distance of the lamp, from the plant will be kept the...
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