Population Growth of an Organism
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Population Growth of an Organism

Course Number: SCI 207, Spring 2011

College/University: Ashford University

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Week 2 Assignments 1 Population Growth of an Organism Mindi Barker 1. Make a hypothesis about how you think the two species of Paramecium will grow alone and how they will grow when they are grown together. I believe that each of these specimens would grow better when combined then when by themselves since when combined they tend to compete with each other when growing. 2. Explain how you tested your...

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2 Week Assignments 1 Population Growth of an Organism Mindi Barker 1. Make a hypothesis about how you think the two species of Paramecium will grow alone and how they will grow when they are grown together. I believe that each of these specimens would grow better when combined then when by themselves since when combined they tend to compete with each other when growing. 2. Explain how you tested your hypothesis. I concluded my hypothesis by separately placing the organisms in a two separate test tubes and then in the last test tube combining both organisms. Finally I evaluated the specimens under the microscope to evaluate how the organisms populated under each combination. 3. On what day did the Paramecium caudatum population reach the carrying capacity of the environment when it was grown alone? How do you know? Day 8 was when the population of the Paramecium Caudatum reached its carrying capacity because that is when there was a change in the organisms. 4. On what day did the Paramecium aurelia population reach the carrying capacity of the environment? How do you know? On Day 12 the Paramecium Aurelia population reached its carrying capacity because that is when there was a change in the amount of organisms in the solution. 5. Explain the differences in the population growth patterns of the two Paramecium species. What does this tell you about how Paramecium aurelia uses available resources? The major difference in the growth patterns of these two organisms were Paramecium aurelia grew at a faster rate just about doubling the other species. Concluding that the Paramecium aurelia uses its resources determined by the looks of the slides that contain the mixed parameciums. The aurelia adaptive became from the very beginning and by Day 12 they took up all the space when mixed with the other species. 6. Describe what happened when the Paramecium populations were mixed in the same test tube. Do the results support the principle of competitive exclusion? I mixed them in the same test tube and the Paramcium ook over the area in all of the solution. This is the principle of competitive exclusion which states that no two populations of Week 2 Assignments different species will occupy the same niche and compete for exactly the same resources in the same habitat for any extended period of time (Cunningham& Cunningham, 2008). 7. Explain how this experiment demonstrates that no two species can occupy the same niche. For a short period of time two species can survive however after a week or two one population eventually takes over using all the resources, taking out other species. 2 Week 2 Assignments My Carbon Footprint Your Results (calculated carbon footprint for me only) Emissions Comparison Tons of CO2 eq/year 8 Your Estimated Emissions 27 United States Average per Person 3 Week 2 Assignments 4 5.5 World Average per Person Your estimated greenhouse gas emissions are 8 tons of carbon dioxide (CO2) equivalent per year, which is below the U.S. national average. Food & Diet (15.1%) Home Energy (36.2%) Your Behavior Breakdo help slow climate change. References Week 2 Assignments 5 Carbon Footprint Calculator- Whats My Carbon Footprint? Cunningham, W. P. & Cunningham M. A. (2008). Principles of Environmental Science: Inquiry and Applications. New York: McGraw-Hill. http://www.mhhe.com/biosci/genbio/virtuallabs/BL 04/BL 04.html Week 2 Assignments 6

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