Why is elodea used in photosynthesis experiment. It's also very easy to cultivate, which is why it's illegal in many places outside its native habitat. Slice off a portion of the stem at an angle and lightly crush the cut end of the stem. Use Cabomba or Elodea, which Jan 22, 2023 · Use phenol red to observe plant photosynthesis. Provides carbon atoms for photosynthesis. As Elodea uses carbon dioxide from the initial solution, a change in pH occurs, causing a color change in the solution. Science at Home - Photosynthesis Floating Leaf Disk Assay for Investigating Photosynthesis Finding a good, quantitative procedure for students to use for exploring photosynthesis is a challenge. A student set up an experiment to show that carbon dioxide is consumed by Elodea plants during photosynthesis. High School Biology. Measure oxygen production in light and dark. Demonstrate that there is a net production of CO2 when Elodea respires in the absence of photosynthesis. This process occurs in the presence of light, which is why the experiment requires a light source. nuclear membrane. Elodea has both chlorophyll a and chlorophyll b. Feb 3, 2020 · 5 Why is Elodea used in photosynthesis experiment? 6 What did the splint test tell you about the gas produced by Elodea? 7 Why are aquatic plants used for photosynthesis experiment? 8 What did the Elodea plant take in during photosynthesis? 9 Why are Elodea supposed to stay the same color? 10 Where does photosynthesis take place in an Elodea plant? Feb 29, 2024 · Introduction The primary objective of this laboratory experiment is to delve deeply into the intricate process of photosynthesis as it occurs in Elodea plants. The plant I usually use for this experiment is called elodea, which is available at any local pet store in the fish area. NADPH C. When CO2 dissolves in water, carbonic acid is formed. Buy bright green, “bushy” (many leaves per section of stem) looking Elodea. Carbon dioxide molecules react with water molecules using light energy to produce oxygen, water, and a glucose molecule. Remove several leaves from around the cut end of the stem. Elodea experiment Aim To find out if temperature affects the rate of photosynthesis in elodea. This indicates that the rate of photosynthesis increases with light intensity. to investigate ecophysiological implications of recent biochemical evidence for significant levels of C 4 photosynthesis in this plant, a pathway normally associated with low photorespiration and high photosynthetic efficiency. A high school biology lab report with procedures and analysis. Demonstrate that there is a net production of CO2 when Elodea respires in the absence of photosynthesis. CO2 E. This lab is designed to show how photosynthesis takes place in the aquatic plant Elodea. Why would we use an aquatic plant (Elodea sp. Study with Quizlet and memorize flashcards containing terms like Given that elodea is a water plant, there is plenty of water present for the plant to perform photosynthesis in this experiment. instead of a terrestrial plant? ### Core Answer Elodea sp. In an investigation, a student placed a lamp at different To use the energy stored by photosynthesis, plants (like all other organisms with mitochondria) use the process of respiration, which is basically the reverse of photosynthesis. Jan 1, 1979 · Photosynthesis, respiration, and release of organic carbon were examined using 14 C in the freshwater angiosperm Elodea canadensis Michx. Find out more with Bitesize. In this lab the distances were 10 cm, 20 cm, and 30 cm away. At age 14–16 students may have collected the gas given off by pond weed (for example Elodea) and tested leaves for starch. This is a simple lab and is nicely detailed for use in the classroom. The investigation may be used as an introductory guided inquiry or a student-led inquiry investigation. cell membrane. While plants generally absorb carbon dioxide and release oxygen during photosynthesis, they can also produce carbon dioxide during cellular respiration. Abstract This lab is about Elodea and photosynthesis, and how the distance of a light source affects the rate of photosynthesis. Study with Quizlet and memorize flashcards containing terms like How can photosynthesis be related to cellular respiration?, Which organisms go through cellular respiration to produce energy in the form of ATP?, What will we be measuring in the lab which will be an indicator of photosynthesis and respiration? and more. Use Cabomba or Elodea, which are sold in aquarium shops. Elodea is cheap and easy to grow, but other pondweeds can also be used. b. Light is required for photosynthesis to occur. 2) Measure the change in the volume of oxygen produced during photosynthesis using a volumeter. What is the relationship between the rate of photosynthesis and temperature? Explore the effect of light distance on photosynthesis in Elodea. Science fair project that examines how light wavelengths affect photosynthesis in the aquatic plant: Elodea. Explore photosynthesis and cellular respiration in Elodea with this lab worksheet. Jan 24, 2024 · Why Is Elodea Used In Photosynthesis Experiment? This North American pondweed is widely recommended for demonstrating oxygen formation during photosynthesis. The process by which ATP is Photosynthesis can be a hard subject for students to comprehend; however, it can be clearly demonstrated using Elodea and a solution of Bromothymol Blue. The effect of light intensity on photosynthesis can be investigated in water plants. Use the Waterweed Simulato r to manipulate the light intensity, wavelength Apr 26, 2023 · RATIONALE Aquatic plants can be used to demonstrate the oxygen production in the process of photosynthesis because they are specialised to produce oxygen while submerged under water. Production of O2, Mark all of the following that are produced in the light reaction of photosynthesis. Photosynthesis is the process by which green plants, including Elodea, convert light energy, usually from the sun, into 3 days ago · Photosynthesis Lab Page 4 of 7 For photosynthesis to occur, we need solar energy, Water, Carbon dioxide, Chlorophyll, & plant 3. If a plant were under water and was photosynthesizing, what gas would Overview This investigation is a visual way to introduce students to photosynthesis. During cellular respiration, the Elodea plant consumes the oxygen produced during photosynthesis and releases carbon dioxide. For photosynthesis to occur, a plant needs sunlight, water and carbon dioxide. Elodea is a type of aquatic plant commonly used in science experiments to study photosynthesis. As plants consume carbon, the indicator will change from yellow to red. Nov 7, 2020 · Virtual photosynthesis lab, students manipulate the light intensity, light color, and distance from the light source. Experiment, results, and conclusions for high school biology. the hypothesis was “If an elodea is farther away from a light source than another elodea, then the elodea close to the light will have a higher rate of photosynthesis, because light is a necessary component in photosynthesis, so the more light, the more Your group will use sprigs (pieces) of Elodea, a water plant. Virtual lab: Electron Transport Chain 1 In Labster’s digital lab Why is the volume level for the Elodea exposed to white light increasing? the plant is undergoing photosynthesis and producing oxygen. Place a generous quantity of Elodea with the cut end up (make sure the cuts are fresh) in a test tube with a rubber stopper containing a Elodea works because it has a lot of leaves in a small space, so things happen faster than for other plants. The glucose made by plants is used by plants and animals as a source of energy. May 18, 2025 · Elodea, particularly E. and measure the rate of photosynthesis. The standard procedures such as counting oxygen bubbles generated by an elodea stem tend to be prone to error and so are unreliable. Count the bubbles to measure the rate of photosynthesis. ribosomes. Bromthymol blue is used as an indicator for the presence of CO2 in solution. Carbon dioxide combines with water to form carbonic acid (H 2 CO 3) which dissociates into hydrogen ions (H +) and bicarbonate ions (HCO 3-). Nov 25, 2024 · The effect of light intensity on the rate of photosynthesis can be investigated by measuring oxygen production in aquatic plants Method Place a length of Elodea pondweed into a beaker of water Add sodium hydrogen carbonate to the water This allows the concentration of dissolved carbon dioxide to be controlled Place a glass funnel over the top of the Elodea Fill a test tube with water and Other Resources on Photosynthesis Rate of Photosynthesis – using baking soda, elodea and light, measure the bubbles to observe how fast a plant photosynthesizes and releases oxygen What Factors Affect Seed Germination – grow seedlings with different conditions (light, water, temperature) Algae Beads and Photosynthesis – use algae cultures and sodium alginate, measure photosynthesis by Elodea is used in photosynthesis experiments to demonstrate the process of oxygen production during photosynthesis. Photosynthesis Lab for AP biology where students use a sprig of elodea. Four Name: Learning Objectives: After completing this lab you should be able to: Calculate Rf values in order to identify unknown photosynthetic pigments Explain the role of various light wavelengths in driving photosynthesis Test whether or not plants absorb carbon dioxide during photosynthesis Test the role of light during photosynthesis Test the role of chlorophyll in producing starch in plants Interpretation of results 1) Why must you wait two minutes before counting the bubbles? > To allow the pondweed to adjust to the new conditions and make sure oxygen is bubbling out, not just filling a gap in the stem. The experiment proved that if the light source was too far away, photosynthesis would be slower and less productive. Study with Quizlet and memorize flashcards containing terms like Prokaryotic cells possess all of the following except A. This chemical energy, in the form of glucose, serves as the Mar 23, 2023 · Photosynthesis is a topic that many students need help understanding. 1 Answer ### Question 1: Why use Elodea sp. During this process, plants use energy from the sun, water, and carbon dioxide to build glucose molecules. The gases produced are readily visible as bubbles escaping from the leaves. Demonstrate that environmental CO2 is used during photosynthesis in Elodea. But what is the other reactant of photosynthesis, and how is this experiment designed to give that reactant to the plant?, In this experiment, we will measure an output of photosynthesis using a Sep 12, 2022 · Why do you add co2 to 3 sodium bicarbonate solution? Why do you need to add carbon dioxide with the 3% sodium bicarbonate (NaHCO3) solution? Carbon dioxide can be used by plants to make glucose during photosynthesis. Most aquarium stores have this plant. Uses BTB to track CO2 changes. Through experimentation with Elodea, you will also measure oxygen production and observe carbon dioxide usage during photosynthesis. Plan Put the elodea in a beaker full of water the snap the end that is growing off to get rid of any air bubbles. Elodea is a commonly used aquatic plant in freshwater aquariums that is capable of growing rapidly when introduced to freshwater ecosystems. One nugget of information you will need to know- pet stores call it anacharis, not elodea. B. As light intensity increases (distance between lamp and plant decreases) the volume of oxygen (or the rate of bubble production) increases. Students investigated how light intensity, measured by distance from a lamp, influences the rate of photosynthesis. Includes procedure, data table, and analysis questions. Jan 2, 2022 · By analyzing data from a classic lab experiment we can draw some conclusions about the effect of light intensity (or strength) on photosynthesis. Lesson organisation In this experiment you will be investigating the effect of light color (wavelength) on the rate of photosynthesis by measuring gas production in Elodea. What is the pigment found in this organelle that absorbs light to power photosynthesis? 5. We will study photosynthesis in an aquatic plant (Elodea) We can measure the rate of photosynthesis and cellular respiration by measuring the amount of CO 2 given off or taken up by the plant. However, at sufficiently high levels of light intensity, the rate oxygen evolution remains constant. Consumption of O2 D. Photosynthesis, a cornerstone of biological mechanisms, stands as a fundamental biochemical process wherein light energy is harnessed and transformed into chemical energy. A bromthymol blue solution, acidified to The independent variable was the distance the light source was from the Elodea. 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. Photosynthesis does not occur at a set rate but at a rate determined by a set of limiting factors: temperature, light intensity and carbon dioxide level. BIOL 1406 Lab with Dr. This North American pondweed is widely recommended for demonstrating oxygen formation during photosynthesis. To see photosynthesis in action, we will observe how a green plant (elodea) uses sunlight to take in CO2 and release O2 (control). The change is detectable in as little as 30 minutes to an hour. EXPERIMENT 4: Below is a graph of the rate of photosynthesis (mL/min) vs. cell wall. Plants use carbon dioxide and the energy from the sun during photosynthesis to produce glucose. This allows the students to focus on only one process -- either photosynthesis or respiration. Dec 26, 2024 · Practical: Investigating Factors Affecting the Rate of Photosynthesis Investigations to determine the effects of light intensity, carbon dioxide concentration and temperature on the rate of photosynthesis can be carried out using aquatic plants, such as Elodea or Cabomba (types of pondweed) The effect of these limiting factors on the rate of photosynthesis can be investigated in the following Save guides, add subjects and pick up where you left off with your BBC account. See also What are the 4 biomolecules and their elements? 5. Detects the release of oxygen. d. This process occurs continuously, even in the absence of light. To see photosynthesis in action, we will observe how a green plant (elodea or other available water plants) uses sunlight to take in CO and Feb 1, 2012 · Elodea Lab Photosynthesis Background Plants are autotrophs meaning they make their own food. Divide the class in half and have lab groups in each half address either “Purpose A,” dealing with the use of CO2 by Elodea during photosynthesis, or “Purpose B,” demonstrating the production of CO2 during plant respiration. Where do aquatic plant get the CO2 for photosynthesis? 3. By performing a starch test on Elodea leaves, you will explore the importance of light and chlorophyll in photosynthesis and how these variables affect final production of carbohydrates within the plant. Consumption of CO2 B. O2 B. A product of photosynthesis that can be measured is oxygen. We did this by using a Gilson Respirometer and samples of Elodea plant placed in H2O and NaHCO3 solutions—both of which were operated under lighte d and darkened external conditions—to measure the consumption of CO2 during photosynthesis Aug 9, 2022 · As you hopefully already know, Photosynthesis is the process used by Plants and some other organisms to create sugars and oxygen from light, water and carbon dioxide. Dec 3, 2024 · In the photosynthesis experiment, filling the large test tube with NaHCO3 (sodium bicarbonate, commonly known as baking soda) solution is crucial for several reasons: Carbon Dioxide Source: The primary reason is that sodium bicarbonate releases carbon dioxide (CO2) when it dissolves in water. It involves placing an aquatic plant, such as elodea or Cabomba, in a beaker of water and exposing it to light while measuring oxygen levels in the water over time. Your group will use sprigs (pieces) of Elodea, a water plant. Jul 28, 2019 · Why do we prefer to take hydrilla or elodea plants in o2 liberated during photosynthesis experiment? What kind of cell is an Elodea leaf? This Elodea leaf cell exemplifies a typical plant cell. Photosynthesis is a process by which plants use light energy to convert carbon dioxide and water into glucose and oxygen. Before they begin the experiment, however, students must come up with a well-worded hypothesis to be tested. 6. Their results showed that as the distance of the lamp decreased, the number of oxygen bubbles produced by the plant decreased, contrary to their hypothesis. The food they produce is glucose, C6H12O6. This classroom experiment used an aquatic plant called Elodea that commonly grows in lakes and ponds and is sold in pet stores for use in home aquariums. Apparatus Heat mat, gauze, Bunsen burner, tripod, beaker, thermometer, funnel, goggles, test tube, water, elodea, sodium hydrogen carbonate, lamp, spatula. (an aquatic plant) is preferred over terrestrial plants in this type of experiment because its submerged leaves allow for direct observation of gas exchange during photosynthesis. Background Research: The problem or question being answered in this experiment is: how does the color of light change the rate of photosynthesis in an elodea plant. Includes procedures, questions, and data analysis. Explore photosynthesis with this Elodea lab worksheet. This makes it easier to quantify the Investigating photosynthesis The effect of light intensity on photosynthesis can be investigated in water plants. Participates in the light reactions of photosynthesis. How does the structure of a plant cell suggest its function? The cell wall contains not only cellulose and We would like to show you a description here but the site won’t allow us. They use this technique to compare the amounts of photosynthesis that occur under conditions of low and high light levels. Below are simple activities that use Elodea to help teach […] Explore photosynthesis in Elodea with this high school lab report. Elodea is often sold in “short” or “long” branches. The common aquatic plant that is used for most of the experiments is Elodea. Supplies and Equipment Available: Jul 12, 2023 · Students learn a simple technique for quantifying the amount of photosynthesis that occurs in a given period of time, using a common water plant (Elodea). Brazilian elodea (Egeria densa; formerly Elodea densa) and Canadian waterweed are commonly used in schools as an experimental plant for demonstrating cellular structures, such as chloroplasts and nuclei, and oxygen production during photosynthesis. Apr 8, 2020 · What is the function of Elodea plant? Brazilian elodea (Egeria densa; formerly Elodea densa) and Canadian waterweed are commonly used in schools as an experimental plant for demonstrating cellular structures, such as chloroplasts and nuclei, and oxygen production during photosynthesis. The bromthymol blue will not interfere with respiration or photosynthesis in Elodea. We can examine the impact each of these has on Photosynthesis, as well as Explore photosynthesis with this lab worksheet using elodea and bromothymol blue. Explore photosynthesis with Elodea! This lab worksheet investigates the effect of light intensity on the rate of photosynthesis. The increase in light intensity kicks photosynthesis into high gear, ramping up the plant’s ability to convert carbon dioxide and water into oxygen and glucose. EXERCISE #1: PHOTOSYNTHESIS AND CELLULAR RESPIRATION IN Elodea In this exercise, you will be conducting experiments that use the dye Phenol Red as an indirect indicator of whether photosynthesis and/or cellular respiration is occurring in Elodea plants. Mar 24, 2015 · In this experiment, the relationship between the photosynthesis rate and temperature on Elodea is investigated. When the light source was at 10 cm away, there was more light so Purpose: Your lab group is asked to design, execute, and analyze an experiment that tries to accomplish the following two tasks: A. Photosynthetic light Buy Elodea the day before the experiment if possible. Photosynthesis is affected by how much light there is. In respiration, glucose is broken down to produce energy that can be used by the cell, a reaction that uses O 2 and produces CO 2 as a byproduct. Task B. Why is elodea used to measure photosynthesis? Since oxygen is much less soluble in water than is carbon dioxide, the Your lab group is asked to design, execute, and analyze an experiment that tries to accomplish the following two tasks: Task A. After In this experiment, you will investigate photosynthesis by an aquatic plant, Elodea. Is a pH indicator c. Place the sprig in a test tube, cut side up. canadensis and E. Explore the effect of light distance on photosynthesis in Elodea plants. The dependent variable was the rate of photosynthesis, which was determined by how many bubbles appeared when the light source was on. This document summarizes an experiment on the rate of photosynthesis in the plant Elodea canadensis. Elodea, also known as waterweed, is a popular choice for photosynthesis experiments due to its aquatic nature and the ease with which it can be observed. The oxygen is released as bubbles into the water. Answers: A. AQA Synergy Photosynthesis - AQA Synergy Effect of light intensity on photosynthesis Plants use energy from sunlight to convert carbon dioxide and water into glucose and oxygen during photosynthesis. Lab report includes procedure, materials, and analysis questions. For students between the ages of 11 and 14. It does not matter how long each Elodea branch is, it is more important that the Elodea are “bushy”, the Jun 9, 2025 · When an Elodea plant is exposed to bright light, it undergoes marvelous transformations that are nothing short of a plant miracle. Using a hands-on experiment to demonstrate the process helps reinforce the concepts with students, especially your kinesthetic learns. This unexpected Question: Why is phenol red used in the photosynthesis experiment with elodea and carbon dioxide? Phenol red: a. Elodea High School Inquiry/Scientific Method Plants This lab involves the qualitative measurement of the changes in carbon dioxide concentration associated with respiration and photosynthesis in the freshwater plant Elodea. Because the leaves of Elodea are only a few cells thick, they will be easy to observe under the microscope to look at cells and cell parts. In-person lab: Oxygen production experiment This is an activity used to investigate the production of oxygen during photosynthesis in aquatic plants. It is not quite so easy to demonstrate the other reactions in photosynthesis. Combining the lab with images and video found on the Internet targets your audio and visual learners as well. 1) Assemble a volumeter. Which substance do you hypothesize provides the CO 2 ? Glucose oxygen Sodium bicarbonate Experimental Procedure: White Light 1. C. 2) Does the distance between the lamp and the plant affect the rate of bubble production? Is there a straightforward relationship? What was the dependent variable in the photosynthesis lab? -Rate of photosynthesis -Light Intensity -Density of leaves of the Elodea sprig -Water temperature of the tap water in the beaker Leaf density of the Elodea sprig Water temperature of the tap water in the beaker Oct 2, 2024 · Elodea is a common aquatic plant used in photosynthesis experiments. densa, is a preferred choice for photosynthesis experiments due to its thin, two-cell thick leaves, facilitating microscopic observations of cell structures, chloroplasts, and cytoplasmic streaming. Measure the rate of photosynthesis in this experiment with online and lab options. Photosynthesis is a combination of multiple chemical reactions. Photosynthesis Lab - Elodea and Bromothymol Blue; SB3 a,b Green plants use sunlight to make glucose. This CO2 is essential for photosynthesis, as plants like Elodea use it in the production of glucose Study with Quizlet and memorize flashcards containing terms like What did we use to measure photosynthetic rate? Answers: A. . Turn a funnel upside down then Nov 8, 2012 · This experiment is a continuation of the experiment "Oxygen Production in Elodea in Direct Light, Distant Light, and Darkness. Photosynthesis is the chemical change by which plants use carbon dioxide and water, with the aid of sunlight, to make glucose and oxygen. The color of light may affect the rate of photosynthesis because different light waves have different amounts of energy. She filled two test tubes with distilled water and placed a piece of Elodea in each of the tubes. Photosynthesis is a process by which green plants convert light energy into chemical energy in the form of glucose. ) for this experiment instead of a terrestrial plant? 2. To do so, the plant must use carbon dioxide and water in a process called photosynthesis. D. In the latter, students Investigating the light dependent reaction in photosynthesis It is fairly easy to show that plants produce oxygen and starch in photosynthesis. Molina Learn with flashcards, games, and more — for free. Includes experiment & questions. Questions: 1. Gaseous carbon dioxide dissolves in water per the reaction Explore the effect of light intensity on photosynthesis in Elodea. In this experiment, you will predict and test the effect of environmental conditions on the process of photosynthesis. Demonstrate that environmental CO2 is used during photosynthesis in Elodea. In our experiment, we are going to determine the rate of photosynthesis by measuring oxygen production of a water plant, elodea under bright light, different colors of light and dim light. 3) Compare rate of photosynthesis in Elodea plants exposed to green or blue light in order to determine if one wavelength of light is better for photosynthesis Photosynthesis and Respiration of Elodea Summary: My group and I measured photosynthesis and respiration rates of the single celled protist algae Elodea. It has a nucleus, and a stiff cell wall which gives the cell its box-like shape. What organelle in plants responsible for photosynthesis ? 4. Elodea is particularly useful for these experiments because it can be easily obtained and cultivated in a laboratory setting. To release the energy contained in the bonds of glucose, the glucose must be converted to ATP. The purpose of this lab was to discover if the distance of the light source from an elodea will affect its rate of photosynthesis. Study with Quizlet and memorize flashcards containing terms like Where do plants get CO2 from for photosynthesis?, Which organisms release this CO2?, Which organelle in plants is responsible for photosynthesis? and more. ATP, Safety glasses were needed in this experiment because Abstract Experiments to determine the early labeled photosynthetic products in Elodea canadensis show that after 2 seconds of exposure to NaH 14 CO 3, 45% of the 14 C incorporated is located in malate and aspartate. Add water to test tube and a pinch of baking soda. Jul 26, 2022 · Egeria densa, also known as Elodea densa because of its previously incorrect classification in the Elodea genus, is the most popular aquatic plant used to teach photosynthesis in the classroom. H2O D. The lab may influence plant growers to place their plants closer to a light source, to increase the rate of photosynthesis. Phosphoglyceric acid and sugars account for 27% of the label during similar exposures. " Temperatures under 15C will not affect oxygen production in photosynthesis yet temperature over 40C will greatly Photosynthesis Investigation Experiment - The Elements of Photosynthesis Goals: For photosynthesis to occur, a plant needs sunlight, water and carbon dioxide. In order to make their food, plants carry out a process known as photosynthesis. Includes procedure, questions, and data analysis. The addition of oxygen is displacing the liquid in the volumeter. , Use the information and the table below to answer the following. Elodea, a freshwater plant, releases gas bubbles when it is placed in direct light. temperature. Elodea is often sold under the common name Anacharis. Materials are easy! You will find a photosynthesis and respiration lab at this site that involves Elodea and snails. Equivalent amounts of organic acids and C 3 cycle products are present after 8 seconds. Elodea leaves, when placed into water in a light environment, will remove CO2 from the water and produce glucose by photosynthesis. You have test tubes and corks at your disposal, as well as other materials, including aluminum foil (which is an excellent way to provide a plant with a totally dark environment). Purpose: Your lab group is asked to design, execute, and analyze an experiment that tries to accomplish the following two tasks: A. Production of CO2 C. oyqhj adzcvl kpynhos trck djuiar apryfzd pajor mgnny nvrujw ojtv