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EFFECT OF BLACK LIGHT ON PHOTOSYNTHESIS OF ELODEA
INTRODUCTION
“Photosynthesis is the process by which plants make food from carbon dioxide and water using light energy. ... (Tesar, 1990) In photosynthesis, photons (i. ... Specific pigments absorb different wavelengths of light. (Tesar, 1990) “Chlorophyll a, the only pigment that can act directly to convert light energy into chemical energy, absorbs red light. ... Carotenoids assist photosynthesis by capturing energy from light wavelengths more in the violet-blue light. ... (Douglas, 1992) “Long wave ultraviolet light is known as ‘black light’.”(Mikel, 2002) “Most commercially available light bulbs which produce ‘black light’ produce some purple light along with the ultraviolet light.”(Kauffman, 1997) The experiment performed was to determine the effect of black light on photosynthesis. For the study, the green plant, Elodea was used to indicate the rate of photosynthesis. The rate of oxygen produced by the Elodea was used to measure the rate of photosynthesis. ... We believe photosynthesis will occur under both the black light and white light, but the rate of photosynthesis under a black light will be less because the black light does not contain the wavelengths absorbed most frequently by the photosynthetic pigments chlorophyll a and b.
Approximate Word count = 775
Approximate Pages = 3.1
(250 words per page double spaced)
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