Worksheets are introduction to biology lab class activity work, lab 7 photosynthesis, lab what affects the rate of photosynthesis duration, grade7lifescience lessonunitplanname microscopelab, cellular respiration and photosynthesis, lab 6 photosynthesis and cellular respiration, microscope lab, photosynthesis virtual labs. The students can adjust the light intensity, light color, water temperature, and carbon dioxide concentration. Find the green elodea, focus with coarse, then fine adjustment. The plant is characterized by its deep green leaves that resemble blades, and its white flowers that consist of three petals that are coated in a waxlike substance that enables them to. Gather one elodea leaf from the teacher and make a wet mount slide of the elodea.
Elodea stem with leaves x x x aluminum foil to block light x x 10. The influences of light intensity on the growth and buoyancy of detachedelodea muttallii planch. Elodea is an aquatic plant and is also commonly known as a waterweed. For short term storage 12 weeks, elodea should be placed in its bag into the refrigerator 4 c. Using forceps remove a small leaf from the tip of an elodea plant and lay it flat in the drop of water. The virtual lab has the students run a trial in whic. A taxonomic revision of the genus elodea hydrocharitaceae is presented. Carbon transfer through snails and elodea virtual lab.
Elodea can be kept living in an aquarium long term if anchored with gravel it should then begin to grow. Fertilization to produce a phytoplankton or algal bloom prevents the establishment of most bottom rooted aquatic weeds and produces a strong food chain to the pond fish. Using elodea in the lab science and plants for schools. Place on the microscope stage with the leaf centered over the hole in the stage.
Plants profile for elodea canadensis canadian waterweed. Photosynthesis and respiration in elodea experimental design sheet restate the two tasks of your experiment as hypotheses. A revision of the genus elodea hydrocharitaceae sciencedirect. Elodea is a genus of 6 species of aquatic plants often called the waterweeds described as a genus in 1803. Elodea lab this lab is designed to show how photosynthesis takes place in the aquatic plant elodea. Fragments grow in a wide range of light conditions and only a very marked reduction in light levels was able to restrict the growth. Elodea nuttallii is one of three introduced species of the genus elodea that are now naturalised in western europe. This activity utilizes the simulation provided by kscience. Elodea lab report light and temperature effects on. Pdf influence of salinity on the growth of elodea species. What structure surrounds the cell membrane in plants and gives the cell support. Observing photosynthesis this is a very simple lab that allows students to observe the formation of oxygen bubble during photosynthesis. Upon arrival, this should be opened and elodea should be kept moist, or it should be placed in a habitat. Next rotate the higher power objective into place, and then focus using only the fine adjustment.
Determining minimal nacl concentration for plasmolysis. Overabundant growth of elodea is a symptom of excessive nutrients phosphorus and nitrogen in the pond water. Dan flerlage, alternative community school, ithaca, new york, 14850 and. Elodea is an underwater perennial plant that sometimes forms tangled masses in lakes, ponds, and ditches with long, trailing stems and green, somewhat translucent leaves. Elodea and carbon dioxidein this lab titled the elodea took my breath away. Elodea definition is any of a small american genus elodea of submerged aquatic monocotyledonous herbs. This plant may be known by one or more common names in different places, and some are listed above.
Controlling the rate of photosynthesis life science teaching. About the classification report about the classification download. The response to hco 3 was also very plastic in plants grown in the laboratory at high hco 3 concentrations and co2 concentrations varying from 14. Name three structures found in plant cells and in animal cells. Describe the shape and the location of chloroplasts. Lab report 2 evolution of a population of beans for the evolution of beans report i will put up on the board how i want you to graph your data. It can grow when floating freely or rooted in substrate. Figure ia shows an experiment in which the ph changes on the upper. The effect of changing environmental variables in the. Sprig of elodea distilled water w baking soda test tube or clear glass timer or watch. Determining nacl concentration of plasmolysis 9272012 dr.
To do this, use a soaked qtip to place a drop of aquarium water towards one end of the slide. As the slide warms from the light of the microscope, you may see the chloroplasts moving, a process called cytoplasmic streaming. View lab report carbon transfer through snails and elodea virtual lab instructions and lab report. The obtained from the lab demonstrated the effects of solute concentrations on the animal and plant cells like red blood cells and elodea leaf cells, also dialysis tubing principles in general. Photosynthesis in elodea lab essay example graduateway. Photosynthesis lab report bio 110 introductory biology i. It is a later introduction than the closely related elodea canadensis michx. Effects of light intensity on the growth and buoyancy of detached. This lab can be done as a demonstration to begin the unit, or it can done as an inquiry lab where students try to devise an explanation for the bubbles they see in the test tube. Nuclear dna content and number of chloroplasts in elodea. Elodea high school inquiryscientific method plants.
The main goal of this study was to show the effect of salt on two macrophytes species, elodea canadensis michaux and elodea nuttallii planchon h. Elodea primarily reproduces by stem fragmentation and rarely by seed. Bucs science classroom at white brook middle school. In this activity, you will use the scientific method of inquiry to perform a laboratory experiment. The basic parts of the scientific process include the following.
Elodea alaska plant materials center division of agriculture. Excessive growth can also reduce dissolved oxygen levels during the summer causing fish kills. Pdf plasmolysis in elodea lab victoria newton academia. The materials required for this experiment for each group of the students are. Turn each tube upside down to maximize light exposure and place the rack of inverted tubes directly underneath the lamp at your lab bench. Regardless of its housing, do not allow your elodea to dry out. This lab involves the qualitative measurement of the changes in carbon dioxide concentration associated with respiration and photosynthesis in the freshwater plant elodea. Elodea and respiration it is a common misconception that plants only perform photosynthesis. Make a wet mount of an elodea leaf on a microscope slide.
The elodea plant is a very helpful pond plant that helps to reduce algae, clarify water and provide shade for fish. Make sure it is pushed down to the bottom of the test tube. Elodea canadensis canadian waterweed this plant can be weedy or invasive according to the authoritative sources noted below. Start with the low power objective and work your way until you have focused the leaf using the high power objective. Elodea can be removed by raking or seining it from the pond, but will reestablish from any remaining fragments and roots. Dense growth of elodea can interfere with some uses of the pond, such as boating and fishing.
Prepare a wet mount of an elodea leaf with aquarium water. Broken plant fragments can root to form new plants. Click on names to expand them, and on p for plants profiles. Growth and nutrient uptake by two species of elodea in. However, elodeas tendency to overgrow causes various problems including prevention of water flow, production of oxygen, fish migration, aquatic. Faster rates of photosynthesis in spinach spinacia oleracea leaves as light intensity surges abstract photosynthesis is a food making process that autotrophic plants. Pdf growth and nutrient uptake by two species of elodea in. Elodea plant for sale live aquarium plants petsmart. Classified in the frogsbit family hydrocharitaceae, elodea is native to the americas and is also widely used as aquarium vegetation and laboratory demonstrations of cellular activities. Short term it can be kept in a shallow tray covered with water. Sep 21, 2017 elodea is a perennial and rooted plant that is multibranched.
Light and temperature effects on photosynthesis abstract elodea elodea canadensis is an aquatic plant that is found in freshwater environments and provides oxygen and nutrients to aquatic life. Variable hco 3 affinity of elodea canadensis michaux in response. A simple class appa ratus for the quantitative determination of oxygen evolution in the photosyn thesis of elodea canadensis. It allows the students to control several conditions around an elodea plant. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct. Plant cell lab onion and elodea the biology corner.
Lightinduced polar ph changes in leaves of elodea canadensis. Classification for kingdom plantae down to genus elodea michx. Elodea prefers cool, clear, slow waters with silty. You should have your lab data and one other set from a group that who had a very different background. Introductionthis lab has been created in order to find what extent does distance from a light source 5cm, 10cm, and 15cm affect the rate of photosynthesis measured in bubbles 3 min in elodea water plants. Pulsechase experiment in which elodea leaves were exposed.
It starts as a blue solution in water, and turns yellow in the presence of carbon dioxide. Photosynthesis elodea lab photosynthesis is the process by which plants take carbon dioxide from the atmosphere, add water, and use the energy of sunlight to produce sugar. Record the starting time on your worksheet, then turn on the lamp and allow the experiment to run for two hours. When we think about plants the first thing that may come to our minds is photosynthesis, but plants do in fact perform. Name two structures found in plant cells but not animal cells. Bromothymol blue is an indicator solution to those used to test for food nutrients. Blades biological provide care information for both the pondweeds elodea and cabomba. Which side of a penny will hold more drops of water before spilling over on to a paper towel. 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. This is a 3 page lab with background info, materials list, clear pr.
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