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A student gives fertiliser to one of two similar plants and none to the other. What is the plant without fertiliser called?

Answer and explanation

Correct answer: Control group

The plant that receives no fertiliser is kept under normal conditions so that the growth of the fertilised plant can be compared with it. Therefore, it is the control group. Applying fertiliser is the independent variable, while plant growth may be the dependent variable. Exam tip: The group that does not receive the factor being tested is the control group.

Related tags

Control GroupFertiliser ExperimentPlant GrowthIndependent VariableDependent VariableScientific MethodHypothesis And ExperimentationExploration: Entering The World Of Secondary Science

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