explore the affects of competition on population growth

SCI 207.W1.LaboratorySCI207 Week 1 Laboratory : Population Biology
Visit Population Biology and complete the virtual lab. This labgives you the opportunity to explore the affects of competition onpopulation growth. Follow the instructions on the PopulationBiology Submission Form. Using this worksheet, you will answer thelab questions and fill in the table on the Population BiologySubmission Form. Save it as a Word document and submit it.
Carefully review the Grading Rubric for the criteria that will beused to evaluate your assignment.Laboratory: Population BiologyComplete the Population Biology Lab foundat:http://www.mhhe.com/biosci/genbio/virtual_labs/BL_04/BL_04.html.This lab gives you the opportunity to explore the affects ofcompetition on population growth.CAREFULLY, follow the instructions to conduct your virtualexperiments.  Fill in the table below as you go.  Thequestions below are the same ones found in the “journal” of thelab.  Hint: Make sure you read click on the “Information” box;valuable information for answering the questions can be foundthere! You are required to answer all six questions and submit thisdocument to the Dropbox.  Do NOT emailthe journal questions to your instructor through the websiteabove.
Paramecium Growth Data
P. aurelia grown alone, cells, mL
P. caudatum grown alone , cells, mL
P. aurelia grown in mixed culture, cells/mL
P. caudatum grown in mixed culture, cells/mL
Day 0
Day 2
Day 4
Day 6
Day 8
Day 10
Day 12
Day 14
Day 16
Journal Questions1.  Make a hypothesis about how you think the twospecies of Paramecium will grow alone and how they will grow whenthey are grown together.  (Make sure you understand what ahypothesis is before you address this!)2.  Explain how you tested your hypothesis.  (Givedetails of how you conducted your experiment. Consider this the“Methods” section of a lab report.)3.  On what day did the Paramecium caudatum populationreach the carrying capacity of the environment when it was grownalone? How do you know?4.  On what day did the Paramecium aurelia population reachthe carrying capacity of the environment? How do you know?5.  Explain the differences in the population growthpatterns of the two Paramecium species. What does this tell youabout how Paramecium aurelia uses available resources?6.  Describe what happened when the Paramecium populationswere mixed in the same test tube. Do the results support theprinciple of competitive exclusion?7.  Explain how this experiment demonstrates that no twospecies can occupy the same niche.

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