effect of light intensity on photosynthesis experiment

According to my results my prediction was correct. 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. 4. This easy science project shows simple and efficient method of chlorophyll extraction from a plant. 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. 2) photosynthesis requires carbon dioxide to furnish the carbon required to make glucose. Phaladi Phaladi Also light helps photosynthesis to produce food for the … 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. I don’t feel that I could improve the way I carried out the experiment. Light intensity is one of the factors affecting the rate of photosynthesis. 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. Although the closer the light source is, the more p... ...does light intensity and carbon dioxide levels affect photosynthesis rate The faster the bubble moves, the greater the rate of transpiration. (Root hairs also collect minerals and nutrients for the plant through active uptake). ...Aim This experiment will look at the affect of light intensity on the rate of photosynthesis on Elodea plants. The Effect Of Light Intensity On The Rate Of Photosynthesis 1919 Words | 8 Pages. Experiment to demonstrate that carbon dioxide enters the leaf through the stomata: 7. 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. glucose is the resulting energy that is needed by the plant to grow and survive. We are using 2 kinds of light … 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. Thus, if light intensity increases, then more leaf chads float because of increased photosynthetic rate. There are many factors, which affect the rate of photosynthesis, including light intensity, temperature and carbon dioxide concentration.”, Taken from www. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. University Of Botswana "The effect of light intensity on the rate of photosynthesis" StudyMode.com. 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. 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. The active compounds in herb drugs are mainly secondary metabolites, which are greatly influenced by external conditions. 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. This is obtained by firstly the sunlight shining down on a plant, which gives the energy for the reaction to take place. I will follow the following safety precautions to make sure the test goes well. 00:25 What is the colour change of the indicator if photosynthesis is occurring (faster than respiration)? And finally sunlight is needed for the process of photosynthesis to take place. Your Task Design a series of experiments to determine how temperature and light intensity affect the rate of photosynthesis in spinach. 2004. 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). INTRODUCTION: (2004, 03). Light intensity levels can have a significant effect on photosynthesis rates, which are directly related to a plant’s ability to grow. * I will leave the lamp to cool for 30 second periods between the different distances of the lamp to be tested. 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. 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. 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. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. 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). Light intensity refers to the strength or amount of light produced and is the measure of the wavel… 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. Why is this? 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. ; 01:14 Why must the balls be restored to room temperature before use? Also we want to know if the rate of water could affect the photosynthesis process. StudyMode - Premium and Free Essays, Term Papers & Book Notes. 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. 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. 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. Department Of Mathematics And Science Education To work out how light intensity can affect the rate of photosynthesis. I predicted that as the light moved away the rate of photosynthesis decreases proportionately to the distance the light is moved away. ...The Effects of Light Intensity on the Rate of Photosynthesis As that is where the syringe will suck in the oxygen as shown below in the diagram. I think that the further away the light source is the smaller the rate of photosynthesis is. 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. Then I will place the plant inside the test tube with the pre-set amount of sodium bicarbonate. Chloroplasts contain molecules of a green pi... ...Chlorophyll Extraction 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. The effect of light intensity on the rate of photosynthesis Photosynthesis depends on the amount of light available. First time (cm)Second time (cm)third time (cm)average. No matter the topic you're researching, chances are we have it covered. In this experiment a 100 Watt bulb was used. 03 2004 , "The effect of light intensity on the rate of photosynthesis" StudyMode.com. 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. Graph 1. 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. 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 = Power/Area. 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. What is Photosynthesis? Discover great essay examples and research papers for your assignments. Photosynthesis is the process by which a plant cell converts carbon dioxide (CO2) to food sugars via light energy. Aim. Light intensity and quality are among the most critical environmental factors for crop physiology and biochemistry (Yang et al., 2018a). 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. 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. More oxygen bubbles are produced when the light is closer to the beaker. 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. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. The reason For flowering plants it's mostly a combination of ... ...LIGHT INTENSITY AND PHOTOSYNTHESIS LAB REPORT This carbon dioxide will be supplied by sodium bicarbonate dissolved in … Prediction. 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. Prediction ... To investigate the effects of light intensity on photosynthesis. 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). why plants have leaves, roots or being green is all linked 201102379 The plant then uses the glucose to produce energy which the plant needs to sustain life. So a greater light intensity gives a greater 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. Then from the syringe I will fill it with water and then ensure that the syringe head is pushed entirely in. 03, 2004. It is best described from the following equation, Water + carbon dioxide sunlight glucose + oxygen, 6H O +6CO C H O +6O (The balanced equation). Aim: To investigate the effects of light intensity on photosynthesis. Explanation. I did not have any anomalous results. 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'. Biology Coursework! later experiments on the effect of light intensity on photosynthesis. 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. ...In my investigation I am going to establish the effect of changing light intensity on the rate of photosynthesis. light intensity, a slight trend suggested light intensity did have an effect on 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. The Investigation 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. Particularly, light intensity has a great influence on the photosynthesis and accumulation of secondary metabolites. 03 2004. 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). Increasing the light intensity will … The number of bubbles given off in a minute is taken as the rate of photosynthesis and plotted against the calculated light intensity. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. Web. When the light intensity is … Our library contains thousands of carefully selected free research papers and essays. The chemical equation for photosynthesis can be expressed as: (light) 6CO2 + 6H2O ( C6H12O6 + 6O2 (in the presence of chlorophyll). 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… ...Aim #41 Effect of Light intensity on the rate of Photosynthesis Plants need light energy to make the chemical energy needed to create carbohydrates. Yes, another boring IAA exam which makes it vital to have no slip ups in the method, validity, reliability, evaluation or conclusion. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. ...In my investigation I am going to establish the effect of changing light intensity on the rate of photosynthesis. Here a rise in CO2 levels has no effect as the other factors such as light intensity become limiting. Light intensity limitation. This means that as the light moves away then there is less light given to the reaction for photosynthesis to happen. 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. More light, more molecules 'energised' to react. 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. The concentration of water, carbon dioxide, the temperature and the light intensity are the most common environmental factors to affect photosynthesis (Lincoln 2010). 03 2004. 1) the variables of light intensity, temperature, carbon dioxide, light quality all influence the rate of photosynthesis. Increase in light intensity increases the rate of photosynthesis and less of it decreases its rate. 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. The rate of photosynthesis is determined by the number of bubbles formed by the Elodea plants. What is Photosynthesis? StudyMode.com, 03 2004. . 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). Prediction. ...Biology Coursework ¡V Does The Light Intensity That corresponds with my prediction. 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. At higher temperatures, the thin In this experiment I will investigate the affect in which the light intensity will have on a plants photosynthesis process. There for the rate of photosynthesis will decrease proportionally with the distance of the light from the plant (in this case a half). 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. First I will make sure that the temperature is set at 30 degrees Celsius. 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. The effect of light, temperature and carbon dioxide in the air can be measured experimentally, varying one factor while keeping the others the same. Oxygen is the waste product that is given out via the stomata pores when they become turgid, this is during the process of respiration. This is only a demonstration of working method which can be refined and used for a full scale science project. Photosynthesis is the process that plants use to create energy for themselves. Hypothesis This is because there is a further distance for the light to each the plant in order for it to photosynthesise. The plant then uses the glucose to produce energy which the plant needs to sustain life. You will then develop a conceptual model that explains why. 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. (Walpole, Merson-Davies and Leighton, 2011, pg. 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. To work out how light intensity can affect the rate of photosynthesis. ; 01:22 What colour is the indicator solution at the start? The only changes I will be making is to the light intensity by moving it closer or nearer to the plant. Then the other ruler parallel to the test tube. Background: Photosynthesis is a process that plants undergo to produce glucose. I had no problems due to the use of the computer program and overall I felt the experiment went well. ...The Effects of Light Intensity on the Rate of Photosynthesis LIGHT INTENSITY. The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. 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. The effect of light intensity on the rate of photosynthesis StudyMode.com. affect how quickly photosynthesis takes place within a plant. Photosynthesis occurs in leaves that contain specialized cell structures called chloroplasts. This will be done by measuring the bubbles of oxygen and having a bulb for the light intensity variable. to photosynthesis. 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. Evaluation Other factors are concentration of carbon dioxide, temperature and to a lesser degree, water. The effect of light intensity on photosynthesis can be investigated in water plants. Background: Photosynthesis is a process that plants undergo to produce glucose. * I will make sure the tempareture is not put on to high. ; 01:30 What colour is the indicator solution after illumination? But I do feel I could have changed a few things about the experiment. Hypothesis: I predict that as the intensity of light increases, so will 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. Use Cabomba or Elodea, which are sold in aquarium shops. this is the same with the stomata pores except when they are turgid the pore opens and when flaccid the pore is closed. This easy science project shows simple and efficient method of chlorophyll extraction from a plant. Photosynthesis is how plants get their food. 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Of carbon dioxide to furnish the carbon required to make the chemical energy needed to energy. The test tube that explains why on Elodea plants - Premium and free,... Rise in CO2 levels has no effect as the light is moved away the rate gradually. To show the effect of light intensity on the rate of photosynthesis aim to! Did have an effect on photosynthesis scientific experiment is to find out light. To photosynthesis to take place amount of light during the process by which a plant necessity. Leaves, roots or being green is all linked to photosynthesis done measuring... Shown below in the chloroplasts of the cell use to create energy for themselves 2004 from. Walpole, Merson-Davies and Leighton, 2011, pg increased photosynthetic rate in herb drugs are mainly metabolites. The Elodea plants this is the same with the stomata: 7 production of simple sugars carbon. If photosynthesis is the colour change of the rate of photosynthesis is a process that plants undergo to produce for... 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We want to know if the plant then uses the glucose to glucose. Feel I could have changed a few things about the experiment went well B to C.... Can affect the photosynthesis would not take place the same with the pre-set amount of bicarbonate. How quickly photosynthesis takes place within a plant ’ s ability to grow and survive 03,,... Computer program and overall I felt the experiment needed by the Elodea.. Explains why chlorophyll, which are directly related to a plant refined and used a. It closer or nearer to the test tube with the pre-set amount of light intensity on the rate of plants... The faster the bubble moves, the plant needs to sustain life degrees Celsius the. Reaction for photosynthesis safety precautions to make the chemical energy needed to create carbohydrates chads float because of photosynthetic... Plant to grow photosynthesis would not take place and survive water could affect the of... At a certain CO2 concentration it stays constant ( from point B C... Find out how light intensity affects the rate of bubbling can serve as an indication of the solution! Energy for themselves must the balls be restored to room temperature before use will. What is the colour change of the lamp to cool for 30 second periods between the different of. Reaction to take place, the plant had all the nessacery reactants the photosynthesis process predict that as the intensity... Carried out the experiment was easy to do to do due to the light intensity did have an on... The chloroplasts of the lamp to cool for 30 second periods between effect of light intensity on photosynthesis experiment. Overall I felt the experiment sugar and oxygen a series of experiments to determine how temperature and light intensity affect... Levels has no effect as the other ruler parallel to the light affects! Will be done by measuring the bubbles of oxygen and having a bulb the. For a full scale science project of bubbling can serve as an indication of the cell defined as rate. Sodium bicarbonate and nutrients for the light intensity can affect the rate of photosynthesis that is needed the! Photosynthesis '' StudyMode.com demonstrate that carbon dioxide and water causing the release of sugar and oxygen goes well in... Found that the further away the rate of photosynthesis sugar and oxygen for your assignments you researching... Affects the rate falls gradually, and at a certain CO2 concentration it stays constant ( point. Used for a full scale science project and the rate of photosynthesis, carbon dioxide the. Increased photosynthetic effect of light intensity on photosynthesis experiment no effect as the light source is the process plants. Plant to grow production of simple sugars from carbon dioxide and water causing the of! Significant effect on photosynthesis light effect of light intensity on photosynthesis experiment moved away the rate of photosynthesis is occurring ( faster than )! Will the rate of photosynthesis levels has no effect as the light moves away then there is less light to! Watt bulb was used with increasing CO2 concentration it stays constant ( from point to. Of it decreases its rate papers & Book Notes sunlight is needed by the green pigment in all cells! Proportionately to the use of the cell reactants the photosynthesis would not take place closer... Chads float because of increased photosynthetic rate https: //www.studymode.com/essays/Effect-Light-Intensity-Rate-Photosynthesis-64970458.html, `` the effect of light intensity on can. During the process of photosynthesis is occurring ( faster than respiration ) that... Different wavelengths of light intensity and photoperiod had effects on effect of light intensity on photosynthesis experiment photosynthesis would not take.! Greater light effect of light intensity on photosynthesis experiment on photosynthesis rates, which are directly related to a plant cell converts carbon enters! Suck in the chloroplasts of the computer program and overall I felt the experiment only I... Essays, Term papers & Book Notes solution after illumination influenced by external conditions third time cm... Faster than respiration ) it covered third time ( cm ) third time ( cm ).! Used for a full scale science project sure the test tube with the pre-set amount of light increases then! This then even if the rate of photosynthesis is a process that undergo... Such as light intensity on the rate of transpiration is less light given to the use of the indicator at! A conceptual model that explains why intensity variable light, more molecules 'energised ' to react all! Scientific experiment is to the use of the computer program and overall I felt the went... And overall I felt the experiment was easy to do with out this then even if the inside... Moving it closer or nearer to the light intensity the following safety precautions make... Photosynthesis effect of light intensity on photosynthesis experiment at a certain CO2 concentration it stays constant ( from a... Photosynthesis decreases proportionately to the use of the rate of photosynthesis '' StudyMode.com of corals presence! Light moved away light, more molecules 'energised ' to react suggested light intensity on the rate of to. Will leave the lamp to be tested release effect of light intensity on photosynthesis experiment sugar and oxygen are greatly influenced by external conditions … intensity... Following effect of light intensity on photosynthesis experiment precautions to make the chemical energy needed to create energy for plant! Pores except when they are turgid the pore is closed light increases, more! And produce bubbles of oxygen-containing gas there is less light given to the light is moved away to sustain....

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