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What is the most appropriate measure of growth while testing the effect of fertiliser on a plant?

Answer and explanation

Correct answer: Change in the plant’s height per week

Change in the plant’s height per week is a numerical, objective measure of growth. It allows a fair comparison between plants given fertiliser and plants not given fertiliser. Leaf colour may indicate plant health, but it is not a direct, precise measure of growth. Exam tip: In an experiment, choose measurements that can be recorded numerically and compared at equal time intervals.

Related tags

Plant GrowthFertiliser ExperimentMeasurementQuantitative DataScientific ObservationScientific Questions And ObservationsExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary Science

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