The Effect of Light on the Organic Elodea PlantObjective: 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 accumulate carbohydrate reserves. Plants produce their own organic food such as starch. Plants need carbon dioxide, water, light and chlorophyll to produce food; and starch and oxygen are produced. Carbon dioxide and water are the raw materials of photosynthesis. The photosynthesis equation is: 6CO2 + 6H20 Þ C6H12O6 + 6O2=========================== Carbon dioxide + water Þ glucose + oxygenPlants greens need sunlight. They use light energy to produce a sugar called glucose. Glucose can be transformed into another type of sugar called sucrose and transported to other parts of the plant in the phloem vessels. Glucose can also be transformed into starch and stored. Both starch and sucrose can be converted back to glucose and used in respiration. Photosynthesis occurs in the mesophyll cell of leaves. There are two types of mesophyll cells: palisade mesophyll and spongy mesophyll. Mesophyll cells contain tiny bodies called chloroplasts that contain a green chemical called chlorophyll. This chemical is used to capture light energy needed in photosynthesis. They take carbon dioxide from the air. Plants use sunlight to turn water and carbon dioxide into glucose. Plants use glucose as food for energy and as a building block for growth. The way plants turn water and carbon dioxide into sugar is called photosynthesis. This means "put together with light" During the winter there is not enough light or water for photosynthesis. Green chlorophyll disappears from leaves. All plants need light to carry out photosynthesis. Photosynthesis can only occur in the presence of light. Hypothesis: The higher the intensity of the light, the more bubbles will be produced. As light increases, the rate of photosynthesis also increases. Apparatus: boiling tube, 250 ml beaker, bench lamp, ruler, sodium