Rate of photosynthesis Essay Example For Students

Rate of photosynthesis Essay Im going to investigate the amount of light used in photosynthisis to see if it has a noticable effect when you increase or decrease the light intensity. Photosynthisis is the way in which light and carbon-dioxide is used by a plant to produce energy in the form of starch. 6CO + 6H O = C H O + 6O The factors that effect the rate of photosynthisis are the amount of light, the amount of carbon-dioxide (CO ) and the temperature that can be used by the plant. I have already carried out the experiment to see the effects on a plant when you change the amount of carbon-dioxide. I found that the more carbon-dioxide used the faster the plant photosynthisied. To see if this rule (More of a limiting factor = The quiker the rate of photosynthisis) works, I will plan a experiment . My experiment will be to see if the light intensity follows this rule. I will use a aquatic plant as they can be used to see the effects under water.These plants still cotain chlorophyll (a light absorbing die thats converts light energy intochemical energy). To see if the amount of light intensity will effect the rate of photosynsis. I predict that the more amount of light you allow the chlorophyll to absorb the quicker the rate of photosynthisis will be. I think this because the amount of light is a limiting factor in the reaction of photosynthisis. So if you alow more of a limiting factor to be present in the chemical reaction it will all most certainly speed up the rate of that reaction. If a plant had the right amount of carbon-dioxide and the right temperature but the wrong amount of light the reaction of photosynthisis will be slow. This is because the reaction needs the light to let the plant turn the light Place the pond weed Inside the upside down Funnel Add 1 Spactular of Sodium Bicarbonate Inside the Upside Down Funnel Set the Lamp (thats connected to the power pack) to the Chosen distance Ethier 10,20,30,40,50cm away from the beaker Start the Stop Clock and time for three Minutes Count the Number Of Bubbles that the Pond Weed Gives off. Remember Repeat This Experiment 6 Times Using a Different distance Each Take results for the same amount of time Use the same amount of sodium bicarbonate Distance of lamp Bubbles realised Average from the plant in 3 minutes A graph to show the effects of light to the rate of photosynthisis Bibliography: .