Record the starting time on your worksheet, then turn on the lamp and allow the experiment to run for two hours. Find, read and cite all the research you need on researchgate. Elodea stem with leaves x x x aluminum foil to block light x x 10. The combined results of ten trials yielded an average oxygen production rate of 0. Photosynthesis is the process by which plants use sunlight to produce energy. Nutrient tissue stoichiometry of submerged aquatic plants knaw. The lab handout should be given to students at least a day before their first involvement. Elodea elodea canadensis us fish and wildlife service.
Describe the shape and the location of chloroplasts. Right click on pdf icon to save target file to your computer. To analyze the acripetal and basipetal phosphorus translocation mechanisms of. Bromthymol blue is used as an indicator for the presence of co2 in solution. This lab involves the qualitative measurement of the changes in carbon dioxide concentration associated with respiration and photosynthesis in the freshwater plant elodea. Pulsechase experiment in which elodea leaves were exposed to nah14co3 for 8. Once there, answer the questions in a different color as you work through the lab. They are included here to provide the reader with more. Arto kurtto fi, editorinchief of atlas florae europaeae, naturhistoriska. Elodea canadensis, elodea nuttallii and elodea callitrichoides. Assign them to read it in its entirety before class. Draw picture s of the elodea cells on your report sheet for both low and high power. Cheek cell lab observe cheek cells under the microscope cheek cell virtual lab virtual microscope view of cells. Visual activities show children the way photosynthesis works.
In this activity, you will use the scientific method of inquiry to perform a laboratory experiment. Growth and nutrient uptake by two species of elodea in. Elodea canadensis was selected for experimental work as an. In this experiment western milfoil, a common fresh water plant, was used to determine the rate of oxygen production during photosynthesis. The process can be a challenging topic, difficult to teach, unless visual activities are used. Plant cell lab microscope observation of onion and elodea plant cell lab makeup can be done at home or at the library plant cell virtual lab use a virtual microscope to view plant cells comparing plant and animal cells looks at cheek and onion cells. View a prepared slide of elodea anacharis, which is an aquarium plant. As the slide warms from the light of the microscope, you may see the chloroplasts moving, a process called cytoplasmic streaming. These projects can vary from the simplest drawing activity to a full science experiment in which growing plants. Pdf the oxygen transfer capacity of submerged plant elodea.
Before and after finishing the second experiment, the cod, n total, and. Oxygen production during photosynthesis in aquatic plant. Elodea densa brazillian elodea elodea najas narrow leaf elodea view all. For use of elodea as an aquarium plant, see our aquatic plants carolina. The basic parts of the scientific process include the following. Plant cell lab onion and elodea the biology corner. Three species of elodea are now known to occur in the british isles. Prepare a wet mount of an elodea leaf with aquarium water. Elodea high school inquiryscientific method plants. Which side of a penny will hold more drops of water before spilling over on to a paper towel. Koz 1 international baccalaureate biology lab report effects of light intensity on photosynthesis candidate.
Elodea is considered an invasive species in some areas and care must be exercised when disposing of left over plants. The rate was determined based on the amount of gaseous oxygen produced by a given number of plants over a period of time. Click here to download a worksheet for completing the lab next, go to the following interactive photosynthesis lab. Cannot be shipped to al, ca, ct, ma, mi, me, nh, or, sc, vt, wa. Using forceps remove a small leaf from the tip of an elodea plant and lay it flat in the drop of water. Other specimens in addition to the cheek cells and elodea leaves, you instructor may require you to identify several other kinds of specimens on a lab practical exam. Turn each tube upside down to maximize light exposure and place the rack of inverted tubes directly underneath the lamp at your lab bench. Taxonomy of elodea michx in the british isles bsbi archive. Pdf growth and nutrient uptake by two species of elodea in. Koz 2 background information photosynthesis is a complex series of reactions catalysed by a number of different enzymes. Growing tips especially to demonstrate streaming protoplasm. Elodea, they are asked to design an experiment which will allow them to demonstrate the. To do this, use a soaked qtip to place a drop of aquarium water towards one end of the slide.