3. What conclusions can you draw about which color in the visible spectrum causes the most plant growth?

Answer:

Based on the experiment results, it can be concluded that blue light in the visible spectrum causes the most plant growth. This conclusion is supported by the fact that the plant exposed to blue light showed the greatest increase in height, number of leaves, and overall health compared to plants exposed to other colors of light. Additionally, the plant exposed to blue light also displayed increased photosynthesis rates, which is essential for plant growth. Therefore, it can be inferred that blue light is the most beneficial for promoting plant growth in the visible spectrum.