In a Simple Laboratory Experiment, a Researcher Maintained Two Different

question 3

Multiple Choice

In a simple laboratory experiment, a researcher maintained two different species of single-celled protists, Paramecium caudatum and Paramecium aurelia . He recorded population growth of each species individually and then mixed a similar number of individuals from each population and recorded their growth rates when living together. The graphs below represent the results of this experiment.

What is the carrying capacity for P. caudatum alone?

• A) ~200
• B) ~100
• C) ~50
• D) cannot be determined from graph

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