The variables that were controlled included the type of plants used, the amount of water given to each plant, the type of soil used, and the amount of exposure to light. The variable that was changed in order to compare growth results was the color of light exposure - blue light, red light, and green light.
2. Analyze the results of your experiment. Did your data support your hypothesis? Explain. If you conducted tests with more than one type of seed, explain any differences or similarities you found among the types of seeds.
Answer:
The results of the experiment showed that the plants exposed to red light exhibited the greatest amount of growth, followed by green light, and then blue light. This supported the hypothesis that red light would promote the most growth in plants.
There were differences among the types of seeds as well. For example, sunflower seeds grew the tallest in red light, while tomato seeds grew the tallest in green light. This suggests that different types of plants may respond differently to different colors of light.
Overall, the data supported the hypothesis that different colors of light can impact plant growth, with red light being the most beneficial for overall growth.