Which of the Following Experimental Designs Would Allow a Researcher

question 38

Multiple Choice

Which of the following experimental designs would allow a researcher to determine the effect of mycorrhizae on plant growth?

• A) measure and compare the growth of two different plants that both have mycorrhizae associated with their roots
• B) measure and compare the growth of two different plants, one of which has had antifungal substances added to it and one that has not
• C) measure and compare the growth of two different plants that do not have mycorrhizae associated with their roots
• D) measure and compare the growth of two different plants, one of which has had antibiotics have been added to it and one that has not

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