Photosynthesis Experiment Using Pondweed

In the first section experiments most suitable for schools are listed, following this are experiments more suited to higher levels. Photosynthesis happens best in blue light. Experiment to show the evolution of oxygen from a water plant; Canadian pondweed (elodea) can be used to measure the effect of light intensity on the rate of photosynthesis. Photosynthesis is the process by which green plants produce food. Net photosynthetic capacity was measured with the flow-through Q-box CO650 (Qubit Systems). You can successfully perform all other common photosynthesis activities using this species of Elodea. In experiments using eg Canadian pondweed, you can immerse the green weed in sodium hydrogencarbonate solution to supply the carbon dioxide (one variable) needed for photosynthesis. References Elodea Photosynthesis Photosynthesis Demonstration Elodea Photosynthesis LICOR Portable Photosynthesis System What is the gas produced by Elodea?. In tube 2, photosynthesis will proceed rapidly enough for carbon dioxide to be used faster than it is produced in respiration. The effect of light intensity can. light Figure 8 (a) Complete the equation for photosynthesis. The pondweed is placed in a beaker of water. i am doing an experiment on pondweed. This is the rate of photosynthesis at that particular concentration of CO 2. Affect of CO2 Level on Photosynthesis. Prediction. 'Algal balls' - Photosynthesis using algae wrapped in jelly balls Photosynthesis can be a hard topic to demonstrate reliably in the lab, especially in winter. What gas do bubbles contain if there is an experiment wether pondweed still has as much photosynthesis underwater? 3 4 5. [2 marks]. Figure 5 The student needed to control some variables to make the investigation fair. Please note, all these 10 pdf files are located of other websites, not on pastpapers. A student investigated the effect of light intensity on the rate of photosynthesis in pondweed. At KS4 you may have collected the gas given off by Canadian pondweed (Elodea) and tested leaves for starch. EvaluationRepeat the experiment to check the result. Please note: Not all unblock requests will be successful as it is dependent on how your IP address is being blocked. Pick an existing quiz or create your own for review, formative assessment, and more. Aim of the experiment:To use pondweed to see how light intensity affects the rate of photosynthesis. : different concs. For a plant to photosynthesize, it needs carbon dioxide and water and sunlight, a factor of photosynthesis. The aim of my experiment was to see whether intensity of light would affect the rate of photosynthesis in a plant. Small populations of extremely rare plants may be eliminated entirely. pondweed) can be tested for oxygen - it will relight a glowing splint. In the first section experiments most suitable for schools are listed, following this are experiments more suited to higher levels. EVALUATING THE RESULTS: The method of the trial was adequate according to the hypothesis of the experiment. Question loops – there is a file in the Revision section which gives instructions on how to use these. You may use a calculator. To do this job, the. The gas relights a glowing splint. In general, the plant is placed in a test tube filled with diluted sodium bicarbonate solution (1%). 1 (a) The lamp gives out heat as well as light. General Process of Photosynthesis. The plasma membrane is adjacent to the rigid or semirigid cell wall, which varies in thickness, depending on the type of cell. A student conducted an investigation where light of different colours was shone on Elodea pondweed. For this we used some pondweed, water, baking powder and a light. Experiments. This plant has been reported from sites in. The answers are out of: Microscopy - MI Culturing Microorganisms - CM Osmosis - OS Investigating Enzymatic Reactions - IER Photosynthesis - PH Food Tests - FT. 11 Fill in the gaps: As the distance of the light from the plant , the light intensity. Add sodium hydroxide solution to one flask to remove the carbon dioxide and soak cotton wool in sodium hydroxide to prevent carbon dioxide from entering the flask. (1 mark) f) After the experiment, leaves from the pondweed shoot were tested for the presence of starch. Users may need to adapt the risk assessment information to local circumstances. Meyer) Thompson, two aquatic angiosperms, were measured at different temperatures and light intensities. Preliminary In my preliminary experiment, I tested the concentrations I had chosen to check that the Elodea photosynthesised. She hangs object A from a wooden stand using two pieces of string. Using a desk lamp, I am trying to find out how differing light intensity affects the rate of photosynthesis in pondweed, therefore increasing the capacity for fish to live healthily in a tank. Papers, Reports, and books in this section relate to work done on Submerged Aquatic Vegetation (SAV) in Chesapeake Bay and Coastal Bays. Resources for IGCSE Biology, based on Edexcel specification although they will fit with others too. Repeat at different light intensities by moving the lamp to different distances. Net photosynthesis and respiration were determined by measuring changes in the. placed the lamp 10cm from the pondweed counted the number of bubbles of gas released from the pondweed in 1 minute repeated this for different distances between the lamp and the pondweed. Users may need to adapt the risk assessment information to local circumstances. Affect of CO2 Level on Photosynthesis. put a piece of pondweed into a test tube of water shone light from a lamp with a red light bulb onto the pondweed counted the bubbles of gas produced by the pondweed every minute for three minutes. What to Measure? Now, how would you measure the rate of photosynthesis? Again, let's look at the equation for photosynthesis: CO 2 + H 2 O + light --> O 2 + glucose There are 2 things we can quickly measure in this experiment (the dependent variables): amount of oxygen produced, or, amount of carbon dioxide used. Monday 14 January 2013 – Morning GCSE TWENTY FIRST CENTURY SCIENCE BIOLOGY A A162/01 Modules B4 B5 B6 (Foundation Tier) F INSTRUCTIONS TO CANDIDATES † Write your name, centre number and candidate number in the boxes above. changing the pondweed by finding a pond weed after every experiment, changing the temperature by using a water bath and heating it to a certain temperature, this would be hard to control. Plan I plan to investigate how light intensity affects the rate of photosynthesis in pondweed. The rates of these reactions can be increased somewhat by increasing the carbon dioxide concentration.  Table 2   Colour of light Rate of photosynthesis in arbitrary units   Blue 24   Green 4   Red 17   Yellow 8 . The experiment was repeated three times giving the weed different concentrations of carbon dioxide each time. What gas do bubbles contain if there is an experiment wether pondweed still has as much photosynthesis underwater? 3 4 5. Repeat at different temperatures: 0°C - surround the beaker with an ice jacket; greater than room temperature (25°C, 30°C, 35°C, 40°C, 45°C, etc. This microscope has a mirror to reflect light up through the slide. Graph the results placing CO 2 concentration on the x-axis. Using the same piece of Elodea for each experiment was impractical as the Elodea ‘s photosynthesis rate decreased over clip. In this lab we will prove that photosynthesis produces starch. Experiment - The Elements of Photosynthesis Goals: For photosynthesis to occur, a plant needs sunlight, water and carbon dioxide. First, you place a source of white light at a specific distance from the. Another experiment using almost identical apparatus would be to vary the color of the light the plant absorbs. It is a good plant to use to study the effects that limiting light has on photosynthesis. Put the slide on the microscope stage. Photosynthesis If pond water is used in the experiment, it is likely to contain dissolved carbon dioxide. (One of the ways to test if photosynthesis has occurred is to test for the presence of starch. Students will analyze data,write a report using the scientific method, and apply results to current environmental issues. Search the history of over 384 billion web pages on the Internet. • Pondweed is a plant which lives in water; especially water that does not move, like in lakes and moats. Investigate the rate of photosynthesis Practise teamwork and collaborate together to navigate through problems Reflect on and review the process, their product and that of their peers LEARNING OUTCOMES To use pondweed to see how light intensity affects the rate of photosynthesis using SAM RECOMMENDED PRIOR KNOWLEDGE Basic understanding of SAM. Oxygen is also released, as a. This set-up was chosen rather than just counting the number of bubbles as it was more accurate. Measuring light intensity and photosynthesis. thescienceteacher. In general, the plant is placed in a test tube filled with diluted sodium bicarbonate solution (1%). So light definitely gets into the upper layers of the ocean, and that's where the process of photosynthesis traps that light and converts it into energy. Skill: Design of experiments to investigate the effect of limiting factors on photosynthesis. To use pondweed to see how light. That’s because chlorophyll is green. References Elodea Photosynthesis Photosynthesis Demonstration Elodea Photosynthesis LICOR Portable Photosynthesis System What is the gas produced by Elodea?. They then moved onto land. Leave for five minutes for the pondweed to acclimatise to the new light intensity. It is easily available from aquarium shops and science suppliers. Aim of the experiment:To use pondweed to see how light intensity affects the rate of photosynthesis. Virtual Experiments have been recorded at Reading in physics and in other areas of science. In an experiment some pondweed was kept In a test-tube of pond water, near a bright light. Yeah NASA did a experiment a couple years back to see whether different coloured light affected the absorption of photosynthesis. Simple experiment to demonstrate oxygen production in pond weed. 2: Human Reaction Time. Remove any. So light definitely gets into the upper layers of the ocean, and that's where the process of photosynthesis traps that light and converts it into energy. The students set up four tubes, A, B, C and D, as shown in the table below. evolution of each of the the Lake Michigan LaMP 2000 chapters into a comprehensive document is summarized in Table ES-1 at the end of this executive summary. Use syringe to draw gas bubble up to ruler and measure. It is easily available from aquarium shops and science suppliers. Plants make food using photosynthesis. She is co-editor of two Glasgow-based poetry zines, SPAM and Gilded Dirt. A photosynthometer can be used to measure the rate of photosynthesis. Patricia Byrd Georgia State University Marie Helt Sacramento State University Victoria Clark. Describe, using a word equation, how plants make their own food through photosynthesis. She hangs object A from a wooden stand using two pieces of string. Ke$ha (Official Video) Song Timber; Artist Pitbull; Licensed to YouTube by. The aquatic weed problem in the Chambal Irrigated Area and its control using grass carp fish. Carbon dioxide gas is usually measured using an infrared gas analyser. To use pondweed to see how light. This pondweed is widely recommended for photosynthesis experiments, as it can be used for demonstrating oxygen formation during photosynthesis. // Provide alternate content for browsers that do not support scripting // or for those that have scripting disabled. This practicum design is often called the Sach experiment. uk A brief outline of various ways to measure the rate of photosynthesis - including measuring photosynthesis via the uptake of carbon dioxide (e. ioenergetics oundation nswers visit twinkl. Development of Research Question Primary production is the production of organic compounds from atmospheric or aquatic carbon dioxide, principally. You can buy this at aquarium stores. The table shows the results. Burning fossil fuels. That’s because chlorophyll is green. Search for notes by fellow students, in your own course and all over the country. PLoS Genetics 10(6):e1004365. using immobilised algae), via the production of oxygen in pondweed, via the increase in dry mass, and via the production of carbohydrates. She repeats the experiment using objects B and C, each time noting the results. The rate of photosynthesis will be measured by the number of bubbles given off (considering that oxygen is produced as a waste gas during photosynthesis). Set up equipment as seen below 2. Using isolated chloroplasts It is fairly easy to show that plants produce oxygen and starch in photosynthesis. The effect of light intensity can. Put a small bunch of pondweed in the tank. There is a crude method where a disc is cut out of one side of a leaf (using a cork borer against a rubber stopper) and weighed after drying. Skill Area E: Evaluating Evidence. A brief outline of various ways to measure the rate of photosynthesis - including measuring photosynthesis via the uptake of carbon dioxide (e. The Lake Michigan LaMP work began in the early 1990s with a focus on critical pollutants just as. Past papers archive search results for pondweed photosynthesis experiment. A common practical when studying plant biology is investigating factors affecting the rate of photosynthesis. This food is important for the plants themselves and for organisms that feed on plants. In this photosynthesis and cell respiration lesson, 5th graders describe the process of photosynthesis with relation to respiration. • Pondweed is a plant which lives in water; especially water that does not move, like in lakes and moats. In general, the plant is placed in a test tube filled with diluted sodium bicarbonate solution (1%). The student did the experiment three times. At KS4 you may have collected the gas given off by Canadian pondweed (Elodea) and tested leaves for starch. Use a variety of sources of information e. words matched: photosynthesis. However, the process presents more of a challenge for aquatic plants if they are fully submerged below the surface of the water. This is because light effects the rate of photosynthesis. So, I need help in getting the Hydrogen Peroxide to reach my desired temperatures and stay there until I stop it. Develop an experiment to test how the level of CO2 affects the rate of photosynthesis. However, writing need the best essay writing argumentative good news is papers, term scottish qualifications authority, sqa, higher english. (4 marks). After 3 hours remove the leaf from the plant and form a starch test. Includes activity using elodea pondweed and student worksheet. To do this job, the. Using a photosynthetic organism of your choice, choose only ONE of the three variables (temperature, wavelength of light, or light intensity) and for this variable design a scientific experiment to determine the effect of the variable on the rate of photosynthesis. A brief outline of various ways to measure the rate of photosynthesis - including measuring photosynthesis via the uptake of carbon dioxide (e. Using the energy of light, carbohydrates such as sugars are synthesised from carbon dioxide and water. Demonstrating Oxygen Evolution during Photosynthesis using Pondweed Watching gas bubble up from a pondweed as it photosynthesises can be a great demonstration or student practical. The diagram on the right shows how pondweed (elodea) can be used to investigate the rate of photosynthesis. This needs light, carbon dioxide and water. Photosynthesis. In addition to taking place in all plant species, photosynthesis is carried out by some algae and bacteria. 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. This practice is a variation of practicum photosynthesis. In experiments using eg Canadian pondweed, you can immerse the green weed in sodium hydrogencarbonate solution to supply the carbon dioxide (one variable) needed for photosynthesis.  Tube A Tube B Tube C Tube D    . using immobilised algae), via the production of oxygen in pondweed, via the increase in dry mass, and via the production of carbohydrates. of light intensity on the rate of photosynthesis using an aquatic organism such as pondweed. The rates of these reactions can be increased somewhat by increasing the carbon dioxide concentration. Describe!the!structure!ofa!villus!and!explain!how!this!helps!absorption. words matched: photosynthesis. She is co-editor of two Glasgow-based poetry zines, SPAM and Gilded Dirt. The affect of light on photosynthesis can be investigated using the experimental setup shown. • You can see how light, temperature and carbon dioxide affect the process of photosynthesis in this video:. Floating plants photosynthesize much like plants that grow on land. Adjust length away of light from pondweed. Use a variety of sources of information e. Updated to better explain. You can successfully perform all other common photosynthesis activities using this species of Elodea. Leaves are alternate, 4-10 cm in length and 5-10 mm wide. He notes the effect. The following picture shows that of a variegated leaf. (The plants were given more carbon dioxide by adding sodium hydrogencarbonate to the water. Before teaching photosynthesis, discuss with your students the importance of the process to human survival. AlboPepper - Drought Proof Urban Gardening 377,472 views. The setup is left in sunshine on a window sill or under a lamp until the next day or lesson. Users may need to adapt the risk assessment information to local circumstances. Trying it again this week, but don't have as much hope with the 'more salad than soup' algae. It is also able to use bicarbonate as a carbon source in alkaline conditions either directly or by converting bicarbonate into carbon dioxide by acidification of the cell walls (Bowmer et al. ,) by using a hot plate. Remove any. The aquatic weed problem in the Chambal Irrigated Area and its control using grass carp fish. Experiments. In addition to taking place in all plant species, photosynthesis is carried out by some algae and bacteria. Ke$ha (Official Video) Song Timber; Artist Pitbull; Licensed to YouTube by. Fill a tank or a glass bowl with water and leave it out for a couple of days to get rid of any chlorine. INVESTIGATION INTO THE FACTORS AFFECTING THE RATE OF PHOTOSYNTHESIS AIM- To identify the factors affecting the rate of photosynthesis and, choosing one factor, to ascertain the effects it has. Place the lamp 10 cm from the pondweed. Use syringe to draw gas bubble up to ruler and measure. thescienceteacher. 00 am to 10. This banner text can have markup. Therefore, the more light, the faster the pondweed will photosynthesis. Additional Science BL2HP Unit Biology B2 Biology Unit Biology B2 Tuesday 22 January 2013 9. Describe, using a word equation, how plants make their own food through photosynthesis. This needs light, carbon dioxide and water. Increase in mass of the disc is an indication of the extra mass that has been stored in the leaf. When this happens, oxygen is also made. The rates of these reactions can be increased somewhat by increasing the carbon dioxide concentration. The number of bubbles released in a given time can be counted as a measure of the rate of. GCSE BIOLOGY PHOTOSYNTHESIS Medium Demand Questions QUESTIONSHEET 5 A student carried out an experiment to find out if plants need light to make starch. Investigate how light intensity affects the rate of photosynthesis. Oxygen is also released, as a. Pearson, as an active contributor to the biology learning community, is pleased to provide free access to the Classic edition of The Biology Place to all educators and their students. This is the rate of photosynthesis at that particular light intensity. The reaction with the half the concentration of acid happens slower and produces half the amount of carbon dioxide. This fun and reliable practical makes investigating photosynthesis easy, with a technique that can be used with students from KS3 to post-16, and offering quantifiable and replicable results. Skill: Design of experiments to investigate the effect of limiting factors on photosynthesis. Figure 5 The student needed to control some variables to make the investigation fair. Development of Research Question Primary production is the production of organic compounds from atmospheric or aquatic carbon dioxide, principally. Set up equipment as seen below 2. Some examples are listed below. Count the number of bubbles given off in one minute. put a piece of pondweed into a test tube of water shone light from a lamp with a red light bulb onto the pondweed counted the bubbles of gas produced by the pondweed every minute for three minutes. The result of this experiment is the change of color in the Bromothymol Blue. Photosynthesis Virtual Labs Lab 1: The rate of photosynthesis is measured in oxygen bubbles. nonnativespecies. Total chlorophyll content was calculated using the formula given by Lichtenthaler and Buschmann (2001). d) What could be limiting the rate of photosynthesis at a light intensity of 25 units? Give. This guide suggests species of pondweed that could be used for the bubbling pondweed experiment. Experiment showing an eelgrass plant (Vallisneria sp. •€€€€€€€€shone light from a lamp with a red light bulb onto the pondweed •€€€€€€€€counted the bubbles of gas produced by the pondweed every minute for three minutes. Don't forget to look at the how to guide. Put the slide on the microscope stage. Construct a data table in the space below that shows the data you collected. Photosynthesis Experiment with Elodea and BTB Photosynthesis and. In this photosynthesis and cell respiration lesson, 5th graders describe the process of photosynthesis with relation to respiration. The rate of photosynthesis is determined by the number of bubbles formed by the Elodea plants. Hindi fa by the students of class vi b on “imaandaar baalak ki prastuti” on 1st. Therefore you will conduct this practical on line. 'Algal balls' - Photosynthesis using algae wrapped in jelly balls Photosynthesis can be a hard topic to demonstrate reliably in the lab, especially in winter. Set up equipment as seen below 2. The cell uses oxygen and glucose to create water, carbon dioxide, and energy. 2 % sodium hydrogen carbonate under a bright light by the window an hour before the lesson started so pondweed was more active. Leave for five minutes for the pondweed to acclimatise to the new light intensity. However, the process presents more of a challenge for aquatic plants if they are fully submerged below the surface of the water. The Process of Photosynthesis. Investigate the effect of light intensity on the rate of photosynthesis using an aquatic organism such as pond weed. Skill Area E: Evaluating Evidence. The table shows the results. for pondweed plant to photosynthesize. The aim of my experiment was to see whether intensity of light would affect the rate of photosynthesis in a plant. Some examples are listed below. 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. How does light intensity affect the rate of photosynthesis in Elodea (pondweed)? In this experiment, we were testing the rate of photosynthesis in elodea. Burning fossil fuels. In addition to taking place in all plant species, photosynthesis is carried out by some algae and bacteria. Changing the amount of carbon dioxide by adding a certain amount of sodium bicarbonate, and many more but this is all that I can think about. _____ 1 1 1 Homework 2 1. photosynthesis. They use this technique to compare the amounts of photosynthesis that occur under conditions of low and high light levels. Carbon dioxide gas is usually measured using an infrared gas analyser. Set up equipment as seen below 2. _____ The IV is _____. EvaluationRepeat the experiment to check the result. Then the pondweed is left to photosynthesise for a set amount of time. 5 (i) How would you measure the volume of gas collected per minute using this set-up? (1 mark) (ii) Present the results of the experiment in the form of a graph. Major emphasis is given to the Sun Belt states where aquatic plant control is critical due to introduction of exotic plants and extended growing seasons. Photosynthesis is the way in which plants make food. 6 In tube 1, no photosynthesis occurs and so carbon dioxide will accumulate as an end-product of respiration. Describe, using a word equation, how plants make their own food through photosynthesis. Increase in mass of the disc is an indication of the extra mass that has been stored in the leaf. You may want to also mention global warming and food production for human consumption and how these relate to photosynthesis to generate interest in the topic. 2 A student investigated the effect of light intensity on the rate of photosynthesis in pondweed. Lower a glass jar into the tank, let it fill with water and then put it upside-down over the pondweed. The plant takes CARBON DIOXIDE from the air and WATER from the soil and combines them together to form SUGAR. A commonly-used plant for such experiments is the Elodea, an aquatic (underwater) plant also referred to as pondweed. The following points highlight the top eleven experiments on photosynthesis in plants. (4 marks). In the experiment because light is the energy needed for photosynthesis, the leaf will appear as in fig. During the second exercise, we observed whether or not light had an effect on Elodea's carbon dioxide consumption during photosynthesis. They found that the leaf did contain starch. Variegated pot plant placed in dark cupboard for 2 days Plant kept in sunlight for 6 hours Foil removed and leaf tested for starch Stage 1 Stage 2 Stage. 39 The results of the experiment are shown in the table below: Light intensity (arbitrary unit) Rate of photosynthesis (mm 3 min-1) 0. (One of the ways to test if photosynthesis has occurred is to test for the presence of starch. In tube 2, photosynthesis will proceed rapidly enough for carbon dioxide to be used faster than it is produced in respiration. Deep evolutionary comparison of gene expression identifies parallel recruitment of trans-factors in two independent origins of C 4 photosynthesis. Fill in the boxes at the top of this page. Plan I plan to investigate how light intensity affects the rate of photosynthesis in pondweed. The major limiting factors in this process are light. The easiest way to measure the rate of photosynthesis is by counting the bubbles of oxygen produced by a pondweed plant. Mehta I, Krishna R, Taunk AP, 1973. light Figure 8 (a) Complete the equation for photosynthesis. Measuring the rate of photosynthesis lab answers: We can measure the rate of photosynthesis in a number of ways, and one of them is to use an underwater plant, such as Canadian pondweed (Elodea canadensis). Aim of the experiment:To use pondweed to see how light intensity affects the rate of photosynthesis. Students frequently wonder if photosynthesis would be a desirable attribute for animals or even humans. Simple experiment to demonstrate oxygen production in pond weed. The pondweed is placed in a beaker of water. Use this Multimedia Science school to perform a virtual version of this experiment or look at the demo set up to answer the questions. This experiment could be improved in a figure of ways. 02 Discussion 1. This indicates that photosynthesis is occurring. 'Algal balls' - Photosynthesis using algae wrapped in jelly balls Photosynthesis can be a hard topic to demonstrate reliably in the lab, especially in winter. Each pigment absorbs different wavelengths, so that the best wavelengths for plants depend on the type of pigment it has the most of. At the start the plant is in dim light, and no bubbling is seen. This virtual experiments require Adobe Flash. In order for us to measure the rate of photosynthesis, we needed to measure the. The student counted the number of bubbles released in 1 minute in each colour of light. Based on the season and availability, the genus Chara offers another great alternative to E. • did the experiment again using a piece of pondweed from a Cabomba plant • did the experiment a third time using a piece of pondweed from an Egeria plant. Cut a piece of the pondweed, Repeat the experiment at different distances away from the light source. * The funnel is raised off the bottom on pieces of blue-tack. Students investigated the balance of respiration and photosynthesis using an aquatic snail and some pondweed. Helen Scales - That's a great question; fundamentally photosynthesis actually began in the oceans - underwater - because that's where plants and algae first evolved. Photosynthesis is the way in which plants make food. Affect of CO2 Level on Photosynthesis. Stratford School Academy KS3 Schemes of Work B3 - Ecosystems Page 1 of 9 Number of weeks (between 6&8) Content of the unit Assumed prior learning (tested at the beginning of the unit). Trying it again this week, but don't have as much hope with the 'more salad than soup' algae. Science and Plants for Schools 94,295 views. Use a piece of filter paper to soak up any liquid from around the edge of the coverslip. Prediction. Photosynthesis, the use of light energy to drive carbon fixation and the synthesis of organic compounds, is a central process in the biosphere. Net photosynthetic capacity was measured with the flow-through Q-box CO650 (Qubit Systems). Or maybe it needs more time to get used to the new temperature. I've shortened down the answers for you so you don't have to type it all out each time. Wait one minute. A student investigated the effect of light intensity on the rate of photosynthesis in pondweed. An experiment with a random design was performed in a greenhouse using black shade cloths of various densities (50%, 60%, 70%, 80%, and 100%, International Greenhouse Company, Georgetown, IL) for three weeks from June 1 to June 21, 2010. The table shows the results. Create your Photosynthesis Experiment Today. The diagram shows the student’s investigation. Predict which color of light will have highest rate of photosynthesis. A dissertation upon the sacred cubit >>> CLICK HERE Types of analytical research papers It’s a beautiful essay, densely argued, replete with quotation, and full of link-lines to lying in day and associated with the light of all our day in himself: men whose hearts and minds, shaped in nature’s presence and. Although cells are produced in a wide variety of sizes and shapes, all have these and other features in common. Investigate the rate of photosynthesis Practise teamwork and collaborate together to navigate through problems Reflect on and review the process, their product and that of their peers LEARNING OUTCOMES To use pondweed to see how light intensity affects the rate of photosynthesis using SAM RECOMMENDED PRIOR KNOWLEDGE Basic understanding of SAM. Class practical In this experiment the rate of photosynthesis is measured by counting the number of bubbles rising from the cut end of a piece of Elodea or Cabomba.