MTLE Life Science (Grades 9-12) Practice Questions - MTLE Life Science (Grades 9-12) Subtests 062 And 063 Exam

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In a controlled experiment testing whether a fertilizer increases plant growth, a researcher grows plants with the fertilizer and a second group without it. What is the purpose of the group grown without fertilizer?

To serve as a control that establishes a baseline for comparison To increase the sample size of the treatment group To act as the independent variable in the experiment To eliminate the need for repeated trials

Correct Answer:

To serve as a control that establishes a baseline for comparison

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