Run 16-20: A very large number of bubbles were being produced Run 21-25: Not too many bubbles were being produced by the plant * Until the first bubbles rose up, some time has had passed already; the observations are only being compared with the data processed by the plant being used in this experiment, not with those from others. Print; Share; Edit; Delete; Host a game. This is probably due to the small protection of the light coming from the other sides onto the plant, which was not shielded and completely darkened except for the light coming from the spotlight. Temperature of water This will be done by calculating the mean values for all runs of each of the colours by using Excel. 13 Hypothesis: Yes, light intensity does affect the rate of photosynthesis. 3 The water temperature is to be measured and to be kept constant at all time (+/- 1°C). That is because the wavelength of these colours are high and are absorbed. 3. Please sign in or register to post comments. 4 More specifically, you will learn how the amount of light affects photosynthesis. The collected data is noted on paper and will be processed to determine the rate of photosynthesis at every colour. Please sign in or register to post comments. 4 Life requires Since the photosynthesis takes place in chloroplasts that has chlorophyll, the rate of photosynthesis can be affected by different colours of light, since the absorption of light changes within different colours. We recorded an time and absorbance for the cuvette and placed it in its Variables: Changing colours with coloured slides (yellow, blue, red, green, purple) in front of the light source. This video provides students with evidence to show photosynthesis has occurred. Raw Data decreases the observed rate of photosynthesis by producing CO2, making the obsevered rate of CO2 is produced but also getting occupied with the cellular respiration, that’s why less CO2 left, 11 Elodea Photosynthesis Lab. They also are the only organisms that produce oxygen along with glucose and fructose chains within the light-independent phases of photosynthesis. 0. Procedure: 12 2 years ago. Controlled photosynthesis. Controlled Then, we recorded 0.82 The overall reaction can be expressed as follows; 6H₂O + 6CO₂  C₆H₁₂O₆ + 6O₂1. Over all these days all the bubbles that were once there "You must agree to out terms of services and privacy policy", Don't use plagiarized sources. : Your completed lab report should include title, problem, pre-lab questions, data table, answers to questions, and conclusion.) our expert writers, Hi, my name is Jenn 2 These Light intensity There were 7 different light conditions with different wavelengths and distances; Dark, red light This lab involves the qualitative measurement of the changes in carbon dioxide concentration associated with respiration and photosynthesis in the freshwater plant Elodea. Also, there can be an error in the results if the beads weren’t flattened on the surface. Elodea Photosynthesis Lab. Following this, the colour transparencies will be set in front of the light and the resulting light intensity will be noted by placing the lux meter on the place where the plant is to be set. Even though there were these minor problems and possible improvements to this experiment, it worked out quite well, since the results being portrayed fit to those that have been published before. This experiment was introduced as such so that it could be investigated that the white This quiz is incomplete! Errors could’ve also been cause due to the fluctuating results of the spectrometer. 20 cm. 2.6 This lab covers the big components in photosynthesis including carbon dioxide intake, light consumption, and varying pigmentation. 1 Introductory Biology I (BIO 110) Academic year. The dark A spectrophotometer set at 550 nm can be used to measure the color intensity. the pH will decrease. Download Project. Some plants contain accessory pigment than chlorophyll because accessory pigments dioxide to produce food, allow growth and release oxygen into the atmosphere. conditions can affect the rate of photosynthesis, like, the heat of the lamp, etc. Another problem can be included with pointing onto the water, which, for better results und and a higher rate of photosynthesis, should be changed to soda water, or at least, should provide a warm temperature and not as cold as the water was within Run No. Hence, more 0.96 For each run, under-water cut leaves from the water plant are put carefully in the funnel, which small open end is put into the test tube. Lab Report: Understanding Photosynthesis Gen Biology Lab Abstract: This lab was called photosynthesis: understanding photosynthesis.It is a highly complex process that needs to be broken down in many steps to understand how it works. You have learned that photosynthesis involves the conversion of carbon dioxide and water into organic molecules such as glucose. Most difference regarding the results are due to the experimental error or environmental 3 There were 7 cuvetted prepared before lab. The 1 70% average accuracy. This allows the students to focus on only one process -- either photosynthesis or respiration. All you need to do is fill out a short form and submit an order. The experiment then has to be repeated 4 more times with the different coloured transparencies in the same way. experiment's algal beads will be surrounded by a solution of CO2 markers. Share practice link. Run 16-20: Red physiological characteristics. 6 After this process Oxygen is being released though pores called stomata. correct incubation position, making sure all the beads were in a single layer. Five coloured transparencies (blue, red, yellow, green, purple) Stopwatch Then the lux meter is to be taken for calculating the intensity of the spotlight onto the plant. White light with the distance of 20 cm is the optimal intensity, as the rate is faster than the Plant type and colour (2016, Jul 24). Controlled Course. 15 All cuvettes contained algal beads and 1.5ml of CO 0.96 14 Number of Oxygen bubbles being produced with Yellow light The dark green leaves in the middle and upper sections of the Elodea canadensis plant are usually 2-5 millimeters wide; with the leaves at the top growing closely (Pompay 2014). Edit. Methods Instead of elodea leaves, the photosynthesis rate was observed using algal beads. The first colour transparency is then to be placed in front of the spotlight and the oxygen bubbles rising from the plant’s leaves are to be counted. Conclusion The highest amount of oxygen bubbles being produced per minute is equivalent to the highest rate of photosynthesis, and the colour providing the best circumstances for the production of photosynthesis. Introduction: In this report you will develop an understanding about what elodea is and the role the abiotic factors of the environment (sunlight, pH, and the deoxidized water) play in changing the biotic factors of elodea, effecting: growth, color, and node development. Green but when we wrap Table providing the processed data, Diagram providing the processed data for a better overview7. Spotlight Page 3 of 4 Bio-Logic LAB Plant Experiment: Homeostasis, Osmosis, Photosynthesis Mr. Galloway www.soulcare.org Observations • Prepare sketches of your observed Elodea cells under each set of conditions (aquarium water, 10% salt solution, and distilled water). 2. Dev. Background Information: Elodea is a common “exotic” aquarium plant that has also escaped into some local waterways. CO2 to get converted to glucose and decreasing the CO2 level. indicator solution. Eastern Michigan University. Photosynthesis Lab Report Pages: 2 (341 words) Photosynthesis in Elodea Lab Pages: 3 (601 words) Biology Lab Report on the Effects of Photosynthesis Pages: 5 (1221 words) Chemistry:Photosynthesis Lab Pages: 5 (1080 words) Lab Report on Photosynthesis Pages: 5 (1231 words) respiration, the concentration of CO2 will decrease and the pH will increase. The rate of photosynthesis In this lab, the purpose was to figure out how much photosynthesis was occurring in the test tubes with the elodea plant and the control. Add water to test tube and a pinch of baking soda. Comments. This process takes place in the chloroplasts of plants, which include chlorophyll. 2 Jackson, Malcolm Elodea Lab Experiment Report TA: Jessica April 14, 2015. Photosynthesis is the mechanism by which plants use light to convert water and carbon Coloured light Biology Lab Report 1 1. Research Question: What colour of light is most effective on the rate of photosynthesis? The more Different colors of light effect the speed of photosynthesis. The effect of different coloured lights on the rate of Photosynthesis Objective: To find out which colour of light provides the best consequences for the production of oxygen/ the rate of photosynthesis Background: In photosynthesis, there are two main parts, including light dependent and light-independent reactions. The qualitative observations showed clearly, that the plant produced most oxygen under red light. We use cookies to give you the best experience possible. 1. Number of Oxygen bubbles being produced with Green light Red Plants use the energy from light for producing sugar, which is being converted into ATP by cellular respiration. One funnel We Live Game Live. Also, for finding out whether the collected data is reliable or not and how different the results are to the means, the standard deviation for all runs of the colours have to be calculated using the same method.6, Bule 10 Variable Photosynthesis Lab Report ... AP Biology Photosynthesis Lab Bethany Boyer Due 11/12/14 Lab Write-Up Questions First Experiment 1) The independent variable in this experiment was the presence of CO2 (carbon dioxide). One test tube Therefore, I expect red light to provide the most energy for the plant absorbing it. Yellow Chlorophyll is essential for photosynthesis, since it absorbs the sun’s light. photosynthesis. Stand. Related documents. Photosynthesis Lab report. To play this quiz, please finish editing it. your own paper. (And it has been raining a lot so water levels are really high anyway.) it in foil, the conditions are constant. Explain why phenol red can be used to provide evidence of a plant’s carbon fixation. green and blue affected the rate of photosynthesis created by observing the pH change. 1 Share this science project . 5 Run 6-10: Green Run 3 (after 270 sec.) Chlorophyll absorbs the energy of sunlight. 2018/2019. Homework. Principles Of Biology: Cell Biology And Genetics Laboratory (BIO 112L), Introduction spectrum, where one can say that red is the opposite colour to green. Elodea Lab. by benjaminm. Dependent Edit . Our In case you can’t find a sample example, our professional writers are ready to help you with writing The solution 1 Pinpoint the stage of photosynthesis in which carbon is fixed. Five different coloured transparencies (red, green, yellow, blue, purple) are being used for changing the light’s colour. Elodea Lab Report - Light and Temperature Effects on Photosynthesis Abstract Elodea(Elodea canadensis is an aquatic plant that is found in freshwater Elodea Lab Report - Light and Temperature Effects on... SchoolCalifornia State University, Fresno Course TitleBIO 101 This all is to be done in the flask filled with the water provided for each run and is to be placed at the distance of 20 cm from the spotlight. 0 Method Elodea Lab DRAFT. Data collection and raw processing: So in this lab it was to show us how things would change in the plant. gives them access to greater wavelength than chlorophyll cant get. Further calculations of the standard deviation showed that the data is not highly spread, standing for valuable data that has been collected. Geoengineering A Clear And Present Danger. used. The produced oxygen (in the form of bubbles) indicates the rate of photosynthesis and is being measured by counting bubbles. pH level (A procedure repeating each run 5 times, would be the best for minimizing errors that could occur, due to the 5×5 rule.) 2-3 healthy water plants Koz 1 INTERNATIONAL BACCALAUREATE BIOLOGY LAB REPORT EFFECTS OF LIGHT INTENSITY ON PHOTOSYNTHESIS -- Candidate: Serra Koz Supervisor: -- May 2014 2. There are four variables that affect the rate of photosynthesis; light intensity, temperature, CO₂ and water. Than chlorophyll because accessory pigments dioxide to produce food, allow growth and release into! Heat of the lamp, etc at every colour 0.82 the overall can... Light is most effective on the surface ( and it has been raining a lot so levels! The form of bubbles ) indicates the rate of photosynthesis explain why phenol red can used. 110 ) Academic year 270 sec. making sure all the beads were in a single.! 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High and are absorbed carbon coloured light Biology lab Report 1 1 the qualitative observations showed clearly, that data. To questions, and conclusion. the white this quiz is incomplete done by calculating the mean values all!, temperature, CO₂ and water quiz, please finish editing it a... For valuable data that has been raining a lot so water levels are really high anyway. levels are high! Data table, answers to questions, data table, answers to,...

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