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Experiment to investigate the effect of light on the organic plant elodea. Aim: To calculate the rate of photosynthesis from the number of oxygen bubbles produced by the plant. Photosynthesis: The process by which green plants use the sun's energy to build up carbohydrate reserves. Plants make their own organic food such as starch. Plants need Carbon dioxide, water, light and chlorophyll in order to make food; and starch and oxygen are produced. Carbon dioxide and water are the raw materials of photosynthesis. The equation of photosynthesis is: 6CO2 + 6H20 ==> C6H12O6 + 6O2 Carbon dioxide + water ==> glucose + oxygen Green plants need sunlight. They use the light energy to make a sugar called glucose. Glucose can be turned into another type of sugar called sucrose and carried to other parts of the plant in phloem vessels. Glucose can also be turned into starch and stored. Both starch and sucrose can be converted back...

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