In this lab, an Elodea specimen is submerged in water under a lamp with a filter that can change the color of the light. We will measure Elodea's rate of photosynthesis by measuring the amount of oxygen it produces. We will investigate the effects of light color and light intensity on Elodea's rate of oxygen production.…
Figure 2. The rate of photosynthesis in elodea plants with different color light filters which include clear, red, blue, and green. The color that produced the highest rate of photosynthesis was clear at .48, then red at .28, and finally green at…
The rate of photosynthesis is affected by environmental factors like light intensity, light wavelength, and temperature. This experiment will test the effect of light intensity on the rate of photosynthesis in a plant called Elodea. Elodea is an easy plant to use for this experiment because it is cheap, abundant, and easy to take care of. This photosynthetic organism needs to be kept in an aerated freshwater tank. To do this experiment, put the Elodea in a beaker of freshwater. Anchor the Elodea using a small weight like a paperclip so that the plant remains in the same position and up right through the entire experiment. Place the beaker of water containing the Elodea in front of a light bulb. In between the beaker and the light bulb, there should be a separate beaker of water that is used to absorb any heat produced by the light. This way the experiment will not be affected by another environmental factor, temperature. Every thirty seconds for five minutes, count the number of bubbles given off by the Elodea. After the first five minutes, move the beaker containing the Elodea about ten centimeters back and let it stand for two minutes so that it can adjust to the new intensity of the light. Count the bubbles released every thirty seconds for five minutes. Move the Elodea back ten more centimeters, let it adjust for two more minutes, then count the number of bubbles…
The objective of this study was to figure out how different light colors affected the rate of photosynthesis in spinach leaves. This was done by taking leaf disks, removing the CO2 and sinking them in beakers. One beaker filled with regular water, the other filled with a mixture of water and sodium bicarbonate. The beakers were then placed in front of the light sources and the amount of disks floating was recorded every minute. In our study the disks exposed to the red light started to float sooner than the…
This lab explores the effect of light intensity and light wavelength on photosynthesis. The quantity of energy [ATP] produced will change depending upon on these parameters.…
For this experiment I am investigating how the light intensity as my limiting factor will have in impact on the amount to oxygen produced, to should the rate of photosynthesis. Therefore, all the controlled variables must remain constant, if not there could be an affect on the accuracy of the dependent variable. The CO2 levels are the same for each trial because before placing the sodium hydrogen carbonate i will weigh it with a measuring scale for 1.5 grams. After completing the five measurements for the first trial, I will change the water and add a new amount of sodium hydrogen carbonate to the water, however using the same pondweed stem. If I am able to keep the sodium hydrogen carbonate the same the results should have a similar affect,…
YOU DO NOT NEED TO ANSWER THE ONLINE QUESTIONS, but you should think about them as you proceed thorough the lab.…
The purpose of the experiment is to determine the effects of sugar on photosynthesis in Elodea. Sugar water with Elodea, water with Elodea, and water (control) are used to test for photosynthesis. Five drops of sugar water were added to sugar water with Elodea beaker. The three beakers were left under normal light for photosynthesis to occur. After 60 minutes, NaOH solution was added to each beaker to test the volume of CO2.…
In this experiment, the class examined how the rate of photosynthesis was affected by different light colors at different distances in shoots of a Cabomba plant. The plants were placed in two different beakers, one with recently boiled and cooled distilled water and the other with saturated sodium bicarbonate solution. The three different color photoflood lamps used for this experiment were white, red, and green at four distances of thirty, sixty, ninety, and one hundred-twenty centimeters away from the plants. There were six groups testing the white light, one group testing the red light, and two groups testing the green light.…
How do limiting factors affect the rate of photosynthesis? Rate is the measurement of an amount of product or time. In the case of the rate of photosynthesis, it is measuring the gain of mass or growth over time. If the plant is an aquatic one that grows in water the rate of photosynthesis can be measured by counting oxygen bubbles or the volume of gas produced in a measured time period.…
Discussion: The effect of wavelength of light on the rate of photosynthesis was investigated in this experiment. The results from Figure 13 suggest that white light, containing all wavelengths of coloured light, has the highest rate of photosynthesis. Purple light had the second highest efficiency, followed by blue, red, and yellow light. Green light was significantly less efficient, producing the second lowest pH reading (Figure 14).…
In conclusion, one can determine how photosynthesis is impacted by light intensity through the experimentation on ivy leaf disks in a bicarbonate solution. The function of the sodium bicarbonate in this experiment was to provide a sufficient amount of carbon dioxide (CO2) for the photosynthesis process to occur. Without CO2 or any of the other necessary reactants, glucose nor oxygen cannot be produced. The leaves rise and sink due to photosynthesis occurring in the plant cells. As the carbon from the sodium bicarbonate is consumed, the leaf disks sink.…
It is a well-known fact that plants need light for nourishment, yet many people are ignorant of the reasons behind this. The biological process by which green plants utilize carbon dioxide, water and sunlight to form their own food is called photosynthesis (unknown). Past research has demonstrated that red and blue rays maximize this process (Rothenburger, 1993). The purpose of this experiment was to examine the effect of several different light sources on plant growth. The Five lights sources studied were incandescent, black, fluorescent, colored, and natural light.…
The light closest to the plant and the most intense led to the production of the most amount of oxygen. The furthest light from the plant led to the least amount of oxygen produced for the three different distances. These results show how the rate of photosynthesis and the by-product produced is increased as the intensity of light is increased. The second part of the experiment reveals that the color of light also has an effect of the rate of photosynthesis. The red light resulted in the greatest amount of oxygen produced and the blue was not too far behind.…
The purpose of this experiment is to find out under what wavelength (different colour of light) the elodea plants are able to grow and photosynthesise the best. This experiment was consisted of 4 different colours of light, Blue, Green, Red and Purple.…