In photosynthesis, a plant takes carbon dioxide from the air and water from the soil and uses the light from sunlight to turn them into food. V Does The Light Intensity Affect the Rate of Photosynthesis The Investigation In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. (Walpole, Merson-Davies and Leighton, 2011, pg. #41 Effect of Light intensity on the rate of Photosynthesis Place a pond weed Elodea upside in a test tube containing water. With an increase in light intensity there will be plant growth at a faster rate in comparison to when the light intensity is low where plant growth is limited and will take place slowly. Photosynthesis is how plants get their food. Biol. Photosynthesis is the process by which a plant cell converts carbon dioxide (CO2) to food sugars via light energy. Lab Experiment on Light and Starch Production in Photosynthesis. Biology Coursework! Does light intensity affect the rate of photosynthesis in Elodea plants? The graph, in a simpler way, shows that the higher the light intensity the faster the rate of photosynthesis. Study of the Effect of Monochromatic Light on Photosynthesis: The quality, intensity and duration of exposure to light are some of the principal limiting factors of photosynthetic process in green plants. Investigating the effect of light intensity on the rate of photosynthesis and identifying the light compensation point On a piece of graph paper, draw out a grid on … The rate of photosynthesis increases linearly with increasing CO2 concentration (from point A to B). (Walpole, Merson-Davies and Leighton, 2011, pg. Place a pond weed Elodea upside in a test tube containing water. 3) Miscount of bubbles – I may have miscounted the bubbles therefore my result can be inaccurate. 9 Photosynthesis In this lab, we will study the effect of light intensity and quality (wave length - color) on photosynthesis.As a measure of the rate of photosynthesis, we will monitor the rate of oxygen production. The relationship derived from light intensity and photosynthetic rate is direct, given that there is enough of the other reactants, carbon dioxide and water, to be consumed in the reaction of photosynthesis â¦ Biology lab: measuring the effect of light intensity on plant growth Aim: Investigate the effect of light intensity on plant growth Hypothesis: Light intensity will have an effect on plant growth. I have come about this answer because for a fact photosynthesis occurs in light only and the rate of reaction is quicker in a warmer condition, so therefore if this condition is colder then the results will be the opposite which is that fewer bubbles (oxygen) will be produced. -length in double Rate distance Amount of oxygen, 3cm 5.7 5.7 5.7 5.7 30 30 30.5 30.1 3.5 19 15.9 12.8 1.2 3% 3% 3% 3%, 6cm 5.8 5.8 5.8 5.8 30 30 30 30 7.5 9 19.5 12 1.2 3% 3% 3% 3%, 9cm 5.7 5.7 5.7 5.7 30.5 30 30 30.1 20.2 19.5 15.5 18.4 1.8 3% 3% 3% 3%, 12cm 5.7 5.7 5.7 5.7 30 30 30 30 11 17.8 20 16.2 1.6 3% 3% 3% 3%, 15cm 5.6 5.6 5.6 5.6 30 30 30 30 19.9 13.3 17.7 16.8 1.6 3% 3% 3% 3%. A very have been carried out on the effect of fluctuating light on plant photosynthesis. I predict that as the light intensity increases that the rate of photosynthesis will increase in proportion, so for example if you increase the light intensity from 10cm away to 20 cm away form a stationary plant. i). Plants have adapted to live in shaded areas by having larger and thinner leaves to increase the number of graph 8). # 43 Effect of Carbon Dioxide on the Rate of Photosynthesis When the concentration of CO2 is low the rate of photosynthesis is also low. This in turn increases the rate of photosynthesis. 4) Distance of light – The distance of the light from the plant may not have been accurate; this can be due to that no one else verified that the distance was accurate. Photosynthesis can be defined as the production of simple sugars (glucose) from carbon dioxide and water causing the release of sugar and oxygen. Experiment - Influencing the Rate of Photosynthesis with Light Intensity and Carbon Dioxide Concentration * Time used to count bubbles produce (5 minutes) * Height of lamp * Amount of Sodium bicarbonate (1 gram) * Heat intensity The distance of the lamp was changed, and the number of bubbles produced in the test tube was counted. – Dependent variable – I am measuring the rate of photosynthesis. Also the distance of the light will have to be controlled by undertaking this there should be different levels of oxygen escaping the plant. This is because light plays a major role in photosynthesis, it helps the leaf to give out oxygen and take in carbon dioxide from the atmosphere which is polluting our world. Light intensity and quality are among the most critical environmental factors for crop physiology and biochemistry (Yang et al., 2018a). The reason that light intensity does affect the rate of photosynthesis is because as light, and therefore energy, falls on the chloroplasts in a leaf, it is trapped by the chlorophyll, which then makes the energy available for chemical reactions in the plant. LIGHT INTENSITY. Photosynthesis occurs only in the presence of light, and takes place in the chloroplasts of green plant cells. Here a rise in light intensity has no affect on the rate of photosynthesis as the other factors such as temperature and carbon dioxide become limiting. Photosynthesis is the process that allows plants to survive (Chiras, 1993). More oxygen bubbles are produced when the light is closer to the beaker. After I have carried out my experiment I have discovered that the light intensity has an effect on the rate of photosynthesis. Graph 1.1 shows the rate distance by light intensity, this graph shows the less amount of light intensity the higher the rate distance. The effect of light, temperature and carbon dioxide in the air can be measured experimentally, varying one factor while keeping the others the same. Effect of light intensity on photosynthesis 1125 words (5 pages) Essay 21st Apr 2017 Biology Reference this Disclaimer: This work has been submitted by a university student. Finally the solar energy is converted into chemical energy and stored in the glucose produced. Experiment: Objective: To show experimentally that light is essential for photosynthesis. Too much light may cause plants to "burn out" while too little light will not provide enough light for optimal photosynthesis activity. This is the rate of photosynthesis at that particular light intensity. Before doing my actual experiment I have decided to do a preliminary investigation; I have done this to overcome errors and mistakes. Also light helps photosynthesis to produce food for the â¦ Count the number of oxygen bubbles given off by the plant in 1 minute period. Background light, heat from other sources and carbon dioxide all played a nuisance during my investigation; background light may have a affected the rate of photosynthesis and heat from other sources may have speeded up the reaction, I realised all this factors above during my preliminary experiment which help me overcome other errors as well so when it came down to the actual experiment itself I knew what errors to overcome and made sure background light and other factors effecting my investigation were dealt with so ill have a fair investigation. The Effect of Light Intensity on Photosynthesis By: Jacob Workman 30 October, 2009 Image by Flickr.com, courtesy of epSos .de Photosynthesis is much more important to humans than we would imagine. As light intensity increases, the rate of transpiration (water uptake) in a plant increases. RESEARCH QUESTION How does Graph 1. Evaluation The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. According to past comparative studies, the dry matter of roots, stems, leaves, and whole plant as well as the photosynthetic rate, transpiration, aâ¦ Not for monetary gain. Prediction: – I forecast that the increase in the light intensity will increase the rate of photosynthesis by giving out more oxygen via bubbles. Experiment # 5. 2) Thermometer – I did not have a thermometer therefore I couldn’t measure the temperature. Here a rise in CO2 levels has no effect as the other factors such as light intensity become limiting. Ultimately, the higher the light intensity the less time it takes for the indicator to turn purple. I feel that my experiment was positive overall; however I thought there were many points at which the accuracy was not perfect such as my preliminary experiment which was not accurate enough to justify being used as my main experiment, mostly due to the fact that I was relying on all the bubbles being the same size, which they clearly weren’t, (I did realise during the experiment there was no way round this matter) however many of the smaller inaccuracies also apply to my main experiment. The effect is that the higher the light intensity the increase in the amount of bubbles produced, this bubble Be sure to refer to the Scientific Method Lab about â¦ We also learnt that if the light intensity was too high than the rate of photosynthesis will not work this is because the enzymes denature if the temperature was to be too high, I did not find this out by doing my investigation, this information was found on the internet after some research. Photosynthesis comes about when trapped light energy turns into carbon dioxide and water into a solution called glucose and oxygen. Create your own unique website with customizable templates. The effect of light intensity on photosynthesis can be investigated in water plants. of light intensity during growth on subsequent light-saturated photosynthesis (Fig. Hypothesis: Yes, light intensity does affect the rate of photosynthesis. More light, more molecules 'energised' to react. In my investigation I am going to establish the effect of changing light intensity on the rate of photosynthesis. I and my group all learnt that after an intensive investigation into how the rate of photosynthesis is affected by the amount of light intensity that the higher the light intensity the faster the rate of reaction. Experiment to demonstrate Mollâs half-leaf experiment for showing that CO2, light, chlorophyll and â¦ Place excess sodium bicarbonate (NaHCO3) in the water to give a constant saturated solution of CO2. Photosynthesis Abstract: An experiment was carried out to determine how certain factors such as light intensity and availability of carbon dioxide, affected the rate of photosynthesis. Firstly, the distance between the light sources and the plant were not measured to a very high degree of accuracy, especially when you note the fact that the distance should have been measured exactly from the filament of the light bulb to the centre of the plant( I couldn’t actually measure from the filament of the light bulb as glass was around it and the light bulb was very hot), and it is possible to find a percentage error.
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