Improvement in Plant Growth Experiment

Hard Research Summaries Experimental Design

In a study to examine the effects of different light conditions on plant growth, researchers conducted an experiment where they placed three groups of identical plants in different light environments: full sunlight, partial sunlight, and complete shade. The researchers measured the height of the plants over a 4-week period, recording data every week. At the conclusion of the experiment, they found that plants in full sunlight grew significantly taller than those in partial sunlight and complete shade.

Based on this experimental design, which of the following statements best describes a potential improvement to the experiment?

Increase the duration of the experiment to observe long-term growth effects.

Use a variety of plant species instead of identical plants to account for genetic variability.

Ensure all groups receive the same amount of water to eliminate water as a variable.

Conduct the experiment in different seasons to observe seasonal effects on growth.

Hint

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