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In an experiment a student tests how light duration affects plant growth. What is the dependent variable?

Answer and explanation

Correct answer: Plant growth

Plant growth is the dependent variable because it is the outcome measured or observed when the duration of light is changed. Light duration is the independent variable because the student changes it. Factors such as soil type and amount of water should be kept constant for a fair test. Exam tip: the variable measured as the result of an experiment is the dependent variable.

Related tags

Dependent VariableIndependent VariablePlant GrowthLight DurationScientific ExperimentControlled VariablesHypothesis And ExperimentationExploration: Entering The World Of Secondary Science

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