The Figure Below Shows the Growth Curves of Two Populations

question 21

Multiple Choice

The figure below shows the growth curves of two populations of Paramecium,P.aurelia and P.caudatum.From the data,we can conclude that ________.

• A) the ecological niches of the two species are very different
• B) P. aurelia is a predator of P. caudatum
• C) P. aurelia and P. caudatum have a mutualistic relationship
• D) P. aurelia is the superior competitor in this habitat

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