Our video demonstrates how best to use this protocol with your students in the lab, which species of pondweed can be used, how to care for pondweeds and a short explanation on the physiology that allows pondweed to bubble. Counting the bubbles helps determine the rate of photosynthesis. // Provide alternate content for browsers that do not support scripting // or for those that have scripting disabled. Choose one variable and design and experiment that would test how this factor affects the rate of photosynthesis. Up to six family members will be able to use this app with Family Sharing enabled. The effect of light intensity on photosynthesis can be investigated in water plants. In this practical experiment, the rate of photosynthesis is measured by counting the number of bubbles rising from the cut end of a piece of Cabomba pondweed. Counting the bubbles helps determine the rate of photosynthesis. Title and author: Factors affecting Photosynthesis Lab. Pondweed Simulation Pondweed or Elodia is an aquatic plant typically used to measure the rate of photosynthesis. This procedur can be accomplished by placing elodea plants in water with baking soda to provide carbon. This simulator addresses three factors that Students can investigate the effects of either light intensity or the wavelength (colour) of light on photosynthesis. (Light = 6.0 | CO2 = 6.0). measured in the number of bubbles produced by the plant. Our video demonstrates how best to use this protocol with your students in the lab, which species of pondweed can be used, how to care for pondweeds and a short explanation on the physiology that allows pondweed to bubble. Adjust the colors 8. Write the equation for photosynthesis (use your book or online resources We have also provided a PowerPoint presentation and notes on pondweed physiology. ESS Topic 1.1: Environmental Value Systems, ESS Topic 2.2: Communities and Ecosystems, ESS Topic 2.3: Flows of Energy and Matter, ESS Topic 2.4: Biomes, Zonation and Succession, ESS Topic 3: Biodiversity and Conservation, ESS Topic 3.1: Introduction to Biodiversity, ESS Topic 3.4: Conservation of Biodiversity, ESS Topic 4: Water and Aquatic Food Production Systems and Society, ESS Topic 4.1: Introduction to Water Systems, ESS Topic 4.3: Aquatic Food Production Systems, ESS Topic 5:Soil Systems and Terrestrial Food Production Systems and Society, ESS Topic 5.1: Introduction to Soil Systems, ESS Topic 5.2: Terrestrial Food Production Systems and Food Choices, ESS Topic 5.3: Soil Degradation and Conservation, ESS Topic 6: Atmospheric Systems and Society, ESS Topic 6.1: Introduction to the Atmosphere, ESS Topic 7: Climate Change and Energy Production, ESS Topic 7.1: Energy Source and Security, ESS Topic 7.2: Climate change – Causes and Impacts, ESS Topic 7.3: Climate change – Mitigation and Adaptation, ESS Topic 8: Human System and Resource Use, ESS Topic 8.1: Human Populations Dynamics, ESS Topic 8.4 Human Population Carrying Capacity, Topic 2.7: DNA Replication, Transcription and Translation, Topic 3.5: Genetic Engineering and Biotechnology, Topic 5.3: Classification of Biodiversity, Topic 6.3: Defense Against Infectious Disease, Topic 6.6: Hormones, Homeostasis and Reproduction, Topic 7.2 Transcription and Gene Expression, Topic 8: Metabolism, Cell Respiration and Photosynthesis, Topic 9.1 Transport in the Xylem of Plants, Topic 9.2 Transport in the Phloem of Plants, Topic 11.1 Antibody Production and Vaccination, Topic 11.3: The Kidney and Osmoregulation. Download the resources from the link on the right. You’ll use it to cover:• This crucial investigation over and over. Site: biologycorner.com/flash/waterweed.html. Set the simulator to 6.0 Light Level, and 6.0 CO2 Level. (Light = Colorless | CO2 = 6.0 ). In this simulation, you will be looking at the production of oxygen as a plant photosynthesizes. Based on the data, what CO2 level results in the fastest rate of photosynthesis? This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. Photosynthesis is a simulation of the classic pondweed experiment. 2. What are the bubbles you are measuring in this lab? You may find that some exam specifications and text books still mention this species but you can use any of those mentioned in this video or any other species that you find work for you. Compatible with iPad. Open the Mac App Store to buy and download apps. Pondweed Simulation Introduction: In this simulation, you will be looking at the production of oxygen as a plant photosynthesizes. to the level of light to complete the data table. Requires iOS 8.0 or later. Download the resources from the link on the right. Watching gas bubble up from a pondweed as it photosynthesises can be a great demonstration or student practical. London WC1R 4HQ. This is an example of a common experiment used to investigate light intensity and the rate of photosynthesis. Based on the data, what light level results in the fastest rate of When placed closer to a light source, the rate of bubbling will speed up, and as the pondweed is taken further away, the bubbles will slow down again - an instant and visual indicator of the importance of light intensity in photosynthesis. Set the simulator to colorless light and CO2 level to 6.0. It'll work every time! Number of Bubbles Choose one variable and design and experiment that would test how this factor affects the rate of photosynthesis. ... Cut a piece of the pondweed, ... Repeat the experiment at different distances away from the light source. The bubbles produced by pondweed can be counted and the rate of bubbling can serve as an indication of the rate of photosynthesis, or the gas can be collected in a pipette or microsyringe and the amount measured. Develop an experiment to test how the level of CO2 affects the rate of photosynthesis. • How light, temperature, and carbon dioxide affect the rate of photosynthesis • How the frequency of light affects rate • How simulated results compare to real experiments. Why is it important that you keep two variables constant (such as light level This website and its content is subject to our Terms and as a guide). oxygen as a plant photosynthesizes. Conditions. photosynthesis? When placed closer to a light source, the rate of bubbling will speed up, and as the pondweed is taken further away, the bubbles will slow down again - an instant and visual indicator of the importance of light intensity in photosynthesis. One common way is to gather bubbles of gas given off by an aquatic plant. Waterweed Simulator Teacher's Guide | Download .doc file, Name: _______________________________________, Creative Commons Attribution-NonCommercial 3.0 Unported License. Previously, Cabomba caroliniana was recommended as a species for this protocol but this is no longer available in the UK, due to the invasive plant directive. • How light, temperature, and carbon dioxide affect the rate of photosynthesis • How the frequency of light affects rate • How simulated re… 6. It'll work every time! Square weelookang@gmail.com; Francisco Esquembre; Félix J. García Clemente 2. There are 3 other potential variables you could test with this simulation: amount of carbon dioxide, light intensity, and temperature. Note: When buying from pet stores in particular, the staff may not be able to identify the type of pondweed they are selling but we hope that you will be able to use the video and images in the guide to pondweeds to help. • How light, temperature, and carbon dioxide affect the rate of photosynthesis • How the frequency of light affects rate • How simulated results compare to real experiments. Keep the light settings at white light (you already tested colored light in the last experiment.) Simulation which can be used to measure the rate of photosynthesis in elodea. The plant can then be exposed to varying intensities and colors of light. of photosynthesis? Introduction: In this simulation, you will be looking at the production of Tes Global Ltd is registered in England (Company No 02017289) with its registered office at 26 Red Lion Students can investigate the effects of either light intensity or the wavelength (colour) of light on photosynthesis. Watching gas bubble up from a pondweed as it photosynthesises can be a great demonstration or student practical. Investigating the rate of photosynthesis. This procedure can be accomplished by placing elodea plants in water with baking soda to provide carbon. It'll work every time! 7. This teaching resource introduces Cabomba, a pondweed which is much more effective than the traditional Elodea. You’ll use it to cover: • This crucial investigation over and over. In addition, you may wish to consider alternative practicals to look at photosynthesis, such as the 'algal balls' practical. Light can be moved towards and away from the plant. Demonstrating oxygen formation during photosynthesis can be a tricky process. Vector for mathematics and physics students. This resource includes student sheets with 4 different investigations, technical notes and full teachers' notes. 1. This resource includes student sheets with 4 different investigations, technical notes and full teachers' notes. The bubbles produced by pondweed can be counted and the rate of bubbling can serve as an indication of the rate of photosynthesis, or the gas can be collected in a pipette or microsyringe and the amount measured. you how fast photosynthesis is occurring? Pondweed or Elodia is an aquatic plant typically used to measure the rate of photosynthesis. level of CO2 and the amount of bubbles produced. Creative Commons Attribution-ShareAlike 4.0 International License. weelookang@gmail.com; Francisco Esquembre; Félix J. García Clemente What settings can you put the simulator on to get the MAXIMUM rate of photosynthesis? Based on the data, what color of light results in the fastest rate Propose an explanation for these results. Created: May 1, 2013| Updated: Feb 22, 2018, SAPS - Bubbling Cabomba pondweed - student sheet, SAPS - Bubbling Cabomba pondweed - teaching notes, SAPS - Bubbling Cabomba pondweed - technical notes. The plant can then be exposed to varying intensities and colors of light. It prohibits the use of any material on this site for commercial purposes of any kind. and color) while you're testing how a third variable (CO2 Level) affects photosynthesis? Make adjustments (Use the previous experiments In addition, you may wish to consider alternative practicals to look at photosynthesis, such as the 'algal balls' practical. if you don't know it). 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. Photosynthesis is a simulation of the classic pondweed experiment. Propose an explanation for these results. to complete the table. influence the rate of photosynthesis.
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