Experiment: To test geotropism, potted plants were placed horizontally and left for 3 days. Root and shoot directions were noted.Observation: Roots grew downward while shoots curved upward.Question: What is the most appropriate conclusion?
Correct answer: D. Roots and shoots respond to gravity in opposite directions.
- A. Roots grow randomly regardless of gravity.
- B. Shoots follow gravity just like roots.
- C. Geotropism only affects aquatic plants.
- D. Roots and shoots respond to gravity in opposite directions.
Explanation
In this experiment, the observation that roots grew downward while shoots curved upward indicates that roots and shoots respond to gravity in opposite directions. This phenomenon is known as geotropism, where roots exhibit positive geotropism by growing towards gravity, while shoots exhibit negative geotropism by growing in the opposite direction. The other options are incorrect as they do not align with the observed results of the experiment.
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