glucose is the resulting energy that is needed by the plant to grow and survive. When the light intensity is … Photosynthesis represented by the equation 6H2O + 6CO2 → C6H12O6 + 6O2 is one of the most crucial chemical reactions on earth as it produces O2 molecules– a gas vital to the survival of many organisms (Vidyasagar, 2018) This process takes place during the light dependent phase of photosynthesis and is indicated by the production of bubbles and can be used to analyse the rate of photosynthesis (Benckiser, 2016). I had no problems due to the use of the computer program and overall I felt the experiment went well. Background: Photosynthesis is a process that plants undergo to produce glucose. 2004. This means that as the light moves away then there is less light given to the reaction for photosynthesis to happen. 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. StudyMode.com, 03 2004. 4. The results did approximately what I expected them to do ; decrease as the light was moved away so reducing the light intensity approximately proportional to the distance of which the lamp was moved. Hypothesis: I predict that as the intensity of light increases, so will the rate of photosynthesis. Prediction ... To investigate the effects of light intensity on photosynthesis. why plants have leaves, roots or being green is all linked Essaybank.co.uk/free_coursework/1649.html. This is because to cause the reaction of the reactants during photosynthesis this needs energy, which in a plants case comes form the sun light taken in by the green pigment called chlorophyll. The Effect Of Light Intensity On The Rate Of Photosynthesis 1919 Words | 8 Pages. First time (cm)Second time (cm)third time (cm)average. Other factors are concentration of carbon dioxide, temperature and to a lesser degree, water. I was correct as when we look at the for example we notice at the distance of 50 cm that the measurement of Oxygen was 2.96 cm where at when we look at the distance of 100 cm we see that it has approximately halved to 1.1 cm. Also we want to know if the rate of water could affect the photosynthesis process. 00:25 What is the colour change of the indicator if photosynthesis is occurring (faster than respiration)? 2), in the presence of light of appropriate intensity, the plant will photosynthesise and produce bubbles of oxygen-containing gas. Because due to the program we could easily set the temperature for 30 degrees and also easily set the time and the sodium bicarbonate and so make sure that all the possible variables stay the same. Plants contain many pigments in different proportions. ...Aim The chemical equation for photosynthesis can be expressed as: (light) 6CO2 + 6H2O ( C6H12O6 + 6O2 (in the presence of chlorophyll). The reason Aim. In photosynthesis, a plant takes This is only a demonstration of working method which can be refined and used for a full scale science project. This easy science project shows simple and efficient method of chlorophyll extraction from a plant. Light intensity limitation. No matter the topic you're researching, chances are we have it covered. ...Biology Coursework ¡V Does The Light Intensity The effect of light intensity followed a Michealis-Menten curve where increases in light intensity corresponded to increases in oxygen production until a peak in oxygen production occurred at a light intensity of 6000 lux. Carbon dioxide is nessacery for the reaction of photosynthesis to take place, it gets in to the plant as one of the gases in air which then diffuses through the stomata pores (which have to be turgid to let it in and so need water for osmosis). Photosynthesis is how plants get their food. * I will make sure the tempareture is not put on to high. The plant then uses the glucose to produce energy which the plant needs to sustain life. Particularly, light intensity has a great influence on the photosynthesis and accumulation of secondary metabolites. Evaluation To work out how light intensity can affect the rate of photosynthesis. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. So the aim of this scientific experiment is to investigate the effects of light intensity on the rate of photosynthesis. (Walpole, Merson-Davies and Leighton, 2011, pg. I did not have any anomalous results. Photosynthesis is the process that plants use to create energy for themselves. Experiment to determine the amount of chlorophyll ‘a’, chlorophyll ‘b’ and total chlorophyll in a given plant tissue: 6. In this experiment, the light intensity is changed by changing the distance of the source of light closer or further away from the elodea, so theoretically, when the intensity becomes stronger due to the light source being closer to the Elodea, the rate of photosynthesis should increase and therefore the number of oxygen bubbles will increase too. The fact that all plants need light in order to photosynthesise has been proven many times in experiments, and so it is possible to say that without light, the plant would die. Light intensity and photoperiod had effects on the growth, survival and photosynthetic efficiency of corals. The rate of photosynthesis increases linearly with increasing CO2 concentration (from point A to B ). 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. ...In my investigation I am going to establish the effect of changing light intensity on the rate of photosynthesis. I found that the experiment was easy to do. There are many factors, which affect the rate of photosynthesis, including light intensity, temperature and carbon dioxide concentration.”, Taken from www. Prediction. Aim: In this experiment we shall investigate how the rate of photosynthesis (measured by the increased volume of oxygen) is affected by changes of light intensity in water plants. At the same time as this the left over water vapour and oxygen are diffused out also through the stomata which again have to be turgid to let it out. I will set up my experiment using the following equipment: 1) test tube filled with water and 0.50 of sodium bicarbonate, 2) a plant that lives in a water ecosystem, 3) syringe connected to a clear tube and then to the test tube (with the plant inside). Light energy is needed for photosynthesis, so as the light intensity increases, the rate of photosynthesis chemical reactions steadily increases in a linear manner - 1st part of the graph is 'light limiting'. That corresponds with my prediction. Phaladi Phaladi This experiment will look at the affect of light intensity on the rate of photosynthesis on Elodea plants. 03, 2004. The effect of light intensity on photosynthesis can be investigated in water plants. 03 2004 , "The effect of light intensity on the rate of photosynthesis" StudyMode.com. The effect of light, temperature and carbon dioxide in the air can be measured experimentally, varying one factor while keeping the others the same. You will notice that they are not direct halves of each other this is because of how much oxygen the plant decides to give off will change. This is obtained by firstly the sunlight shining down on a plant, which gives the energy for the reaction to take place. The Investigation How light intensity effects the rate of photosynthesis Essay, In this unit you’ve been learning all about plants.…, The effect of Maximal rate of Fat oxidation during…, set up and solve a case-study example of the…, Calculate the combined incidence rate of MSDs and…, “Runagate Runagate” by Robert Hayden Essay, Discrimination with “A House on Mango Street” Essay. Then I will attach a clear tube to the test tube using a bung and on the other end of the tube I will attach securely the syringe. Your Task Design a series of experiments to determine how temperature and light intensity affect the rate of photosynthesis in spinach. Light intensity and quality are among the most critical environmental factors for crop physiology and biochemistry (Yang et al., 2018a). I also back my theory up using the following quote, “Photosynthesis occurs only in the presence of light, and takes place in the chloroplasts of green plant cells. Retrieved 03, 2004, from https://www.studymode.com/essays/Effect-Light-Intensity-Rate-Photosynthesis-64970458.html, "The effect of light intensity on the rate of photosynthesis" StudyMode.com. Explanation. StudyMode - Premium and Free Essays, Term Papers & Book Notes. Experiment … later experiments on the effect of light intensity on photosynthesis. Yes, another boring IAA exam which makes it vital to have no slip ups in the method, validity, reliability, evaluation or conclusion. I will follow the following safety precautions to make sure the test goes well. 61, 62, 63) AIM The aim of this experiment is to investigate the effects of light intensity on the rate of photosynthesis by counting oxygen bubbles. carbon dioxide from the air and water... ...Introduction: Photosynthesis is the process by which green plants use the light energy to convert carbon dioxide and water into simple sugar called glucose, which provides a basic energy source for the plant. It is taken in by the green pigment in all plant cells called chlorophyll, which is located in the chloroplasts of the cell. I predicted that as the light moved away the rate of photosynthesis decreases proportionately to the distance the light is moved away. Increasing the light intensity will … Also light helps photosynthesis to produce food for the … Water is taken in via the root hairs which stick out in to the soil, these are located on the roots themselves, because of these root hairs this gives the plant a bigger surface area in which it can absorb more water. With out this then even if the plant had all the nessacery reactants the photosynthesis would not take place. The aim of the experiment was to determine whether different light intensities have different effects on the rate of photosynthesis of two plants, one grown in normal light conditions and one grown in shade conditions. 1) the variables of light intensity, temperature, carbon dioxide, light quality all influence the rate of photosynthesis. Why is this? This carbon dioxide will be supplied by sodium bicarbonate dissolved in … Aim: To investigate the effects of light intensity on photosynthesis. The effect of light intensity on the rate of photosynthesis StudyMode.com. To work out how light intensity can affect 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, an… At higher temperatures, the thin Light Intensity = Power/Area. Aim. As the bulb emits light in all direction we use the area of a sphere with the radius being the distance from the pond weed. But I do feel I could have changed a few things about the experiment. I think that the further away the light source is the smaller the rate of photosynthesis is. 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. 201102379 I don’t feel that I could improve the way I carried out the experiment. For flowering plants it's mostly a combination of ... ...LIGHT INTENSITY AND PHOTOSYNTHESIS LAB REPORT Experiment to show the effect of different wavelengths of light during the process of photosynthesis: 5. Accessed 03, 2004. https://www.studymode.com/essays/Effect-Light-Intensity-Rate-Photosynthesis-64970458.html. What is Photosynthesis? ...In my investigation I am going to establish the effect of changing light intensity on the rate of photosynthesis. According to my results my prediction was correct. Experiment to demonstrate that carbon dioxide enters the leaf through the stomata: 7. Plant Growth Plant growth processes involve the use of light, carbon dioxide and water to manufacture food for the plant’s use, according to the Texas A&M University Agricultural Extension Service. 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. For example I could have examined other variables such as lack of air or no soil or changes in water amounts given to the process of photosynthesis etc. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. This is because light energy is a driving force in photosynthesis, and one of the products of photosynthesis (oxygen) causes the leaf chads to float. The only changes I will be making is to the light intensity by moving it closer or nearer to the plant. 03 2004. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. More oxygen bubbles are produced when the light is closer to the beaker. 2), we want to determine the intensity and distance from light affect the rate of photosynthesis in aquatic plant because the plant itself needs more water to grow. Photosynthesis is the process by which a plant cell converts carbon dioxide (CO2) to food sugars via light energy. "The effect of light intensity on the rate of photosynthesis" StudyMode.com. ; 01:22 What colour is the indicator solution at the start? More light, more molecules 'energised' to react. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. Light intensity refers to the strength or amount of light produced and is the measure of the wavel… Prediction. ...The Effects of Light Intensity on the Rate of Photosynthesis Background: Photosynthesis is a process that plants undergo to produce glucose. Now I will place the meter ruler next to the test tube as shown in the diagram below and place the lamp along side it so the distance of the light can be measured accurately. For example if one measurement is taken the if the light is moved away after it approximately double the distance then I would expect the rate of photosynthesis to drop. Web. this is the same with the stomata pores except when they are turgid the pore opens and when flaccid the pore is closed. Then from the syringe I will fill it with water and then ensure that the syringe head is pushed entirely in. The plant then uses the glucose to produce energy which the plant needs to sustain life. GROUP MEMBERS: MARITONI VALENCIA, SANGITA TAMANG, RYUTARO SEIKI AND MAO Then I will measure at 11 different distances (three times each) of the light away from the test tube with the plant in and then pull the syringe head out. This article will have all you need to know about the Biology IAA coursework on the investigation into the effect of light intensity on the rate of photosynthesis. INTRODUCTION: University Of Botswana Photosy... ...Introduction: Photosynthesis is the process by which green plants use the light energy to convert carbon dioxide and water into simple sugar called... ...Chlorophyll Extraction And finally sunlight is needed for the process of photosynthesis to take place. This is partly due to the fact we did the test via a computer program as the real test would be time consuming and less accurate. This experiment proves the necessity of light for photosynthesis. Graph 1. (2004, 03). Biology Coursework ¡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. #41 Effect of Light intensity on the rate of Photosynthesis Plants need light energy to make the chemical energy needed to create carbohydrates. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. In this experiment I will be investigating the impact of light intensity on the rate of water uptake, due to transpiration, by attaching a shoot from a leafy plant in the capillary tube of a potometer, and then measuring how long it takes for a bubble to move a set distance. to photosynthesis. The faster the bubble moves, the greater the rate of transpiration. ; 01:30 What colour is the indicator solution after illumination? Discover great essay examples and research papers for your assignments. Plants, through the use of chlorophyll (green pigment in plants) that traps light can generate ‘food’ by combining carbon dioxide in the air and water. Thus, as the amount of sunlight, or in this case light from a bulb, falls on the plant, more energy is absorbed, so more energy is available for the chemical reactions, and so more photosynthesis takes place in a given time. The effect of light intensity on the rate of photosynthesis Photosynthesis depends on the amount of light available. The autora- diographic studies reported in Table 1 were done with algae from a temperature of 57C, where algal standing crop is the highest (Brock and Brock 1966; Brock 1967a). Affect the Rate of Photosynthesis This would happen because of the age of the plant or the ability to carry out photosynthesis may have decreased slightly making it impossible to get exact answers. In this experiment a 100 Watt bulb was used. Thus, if light intensity increases, then more leaf chads float because of increased photosynthetic rate. Then the other ruler parallel to the test tube. ...Aim It is best described from the following equation, Water + carbon dioxide sunlight glucose + oxygen, 6H O +6CO C H O +6O (The balanced equation). These bubbles can be counted and the rate of bubbling can serve as an indication of the rate of 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. Water is essential for the process of photosynthesis and also to stop the plant from wilting, because plant cells take up water via osmosis which makes them tight or turgid and so the plant stays upright, but if there is no water in the cell then the cell becomes flaccid and loose causing the plant to wilt and die. . The rate falls gradually, and at a certain CO2 concentration it stays constant (from point B to C). First I will make sure that the temperature is set at 30 degrees Celsius. Hypothesis Light intensity levels can have a significant effect on photosynthesis rates, which are directly related to a plant’s ability to grow. The number of bubbles given off in a minute is taken as the rate of photosynthesis and plotted against the calculated light intensity. The effect is that the higher the light intensity the increase in the amount of bubbles produced, this bubble produced from the plant is oxygen. The rate of photosynthesis is determined by the number of bubbles formed by the Elodea plants. Biology Coursework! And so when there is less energy the plant has the reduced ability to make glucose or food for itself to survive and so will give off less waste products as we see from the graph. Aim: To investigate the effects of light intensity on photosynthesis. ...The Effects of Light Intensity on the Rate of Photosynthesis 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. Photosynthesis can be defined as the production of simple sugars from carbon dioxide and water causing the release of sugar and oxygen. Photosynthesis occurs in leaves that contain specialized cell structures called chloroplasts. We are using 2 kinds of light … This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. For most crop plants, even a slight increase or decrease in light intensity leads to considerable changes in leaf morphology and structure (Wu et al., 2017). Increase in light intensity increases the rate of photosynthesis and less of it decreases its rate. ; 01:14 Why must the balls be restored to room temperature before use? In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. There fore I only plan to change the sunlight intensity because I feel that this would be the best variable for me to change to find out how light intensity affects the rate of photosynthesis. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. Here a rise in CO2 levels has no effect as the other factors such as light intensity become limiting. This easy science project shows simple and efficient method of chlorophyll extraction from a plant. We see this from the graph because the line of best fit drawn in goes on a downward slope indicating the amount of waste product of photosynthesis (oxygen). My test will be fair, as I will be using the same equipment throughout my experiment and I will be taking all of the measurements throughout the experiment. Department Of Mathematics And Science Education What is Photosynthesis? Also instead of measuring the length of the oxygen bubble I could have taken measurements changing the light intensity by percentage (%) or power of the light. Then I will place the plant inside the test tube with the pre-set amount of sodium bicarbonate. And so from my graph I can see that as the light moves away from the plant in the test tube that the rate of photosynthesis decreases. As that is where the syringe will suck in the oxygen as shown below in the diagram. Our library contains thousands of carefully selected free research papers and essays. Light intensity is one of the factors affecting the rate of photosynthesis. affect how quickly photosynthesis takes place within a plant. light intensity, a slight trend suggested light intensity did have an effect on the rate of photosynthesis. But the way I explained to set up the experiment is the same way it was set up on the computer program, making my method correct. * I will leave the lamp to cool for 30 second periods between the different distances of the lamp to be tested. So a greater light intensity gives a greater rate of photosynthesis. The concentration of water, carbon dioxide, the temperature and the light intensity are the most common environmental factors to affect photosynthesis (Lincoln 2010). 2) photosynthesis requires carbon dioxide to furnish the carbon required to make glucose. This is because there is a further distance for the light to each the plant in order for it to photosynthesise. 03 2004. 4) Two rulers 1 meter ruler to measure distance of light from plant and the other 30 cm ruler to measure the amount of oxygen given off from photosynthesis. (Root hairs also collect minerals and nutrients for the plant through active uptake). You will then develop a conceptual model that explains why. Chloroplasts contain molecules of a green pi... ...Chlorophyll Extraction LIGHT INTENSITY. Although the closer the light source is, the more p... ...does light intensity and carbon dioxide levels affect photosynthesis rate Use Cabomba or Elodea, which are sold in aquarium shops. 1. This will then reveal, (after a pre-set time of 5 minutes timed by the stopwatch) how much oxygen was given off measured in cm by the ruler next to the tube. The portion of the leaf exposed to light gives positive starch test, i.e., it becomes deep blue in iodine solution, whereas, the covered portion of the leaf gives negative starch test and does not become blue-black in iodine solution. Oxygen is the waste product that is given out via the stomata pores when they become turgid, this is during the process of respiration. There for the rate of photosynthesis will decrease proportionally with the distance of the light from the plant (in this case a half). The active compounds in herb drugs are mainly secondary metabolites, which are greatly influenced by external conditions. Temperature, carbon dioxide, light intensity variable a plant it with water and then that. Determined by the plant will photosynthesise and produce bubbles of oxygen and having a bulb for light. 01:30 What colour is the smaller the rate of photosynthesis '' StudyMode.com plant active... 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