Did this experiment give accurate results? Why or why not? A plant biologist wants to test the effectiveness of a plant hormone on a certain plant species. She uses 3 seeds from the plant to start her experiment. The seeds are planted the same depth of soil and given the same amount of water and sunlight. She applies 10 mg of hormone to the first plant with 5 mg of hormone grew the fastest and the tallest. She then repeats her experiment 2 more times.