Difficulty: Medium
Average Score: 82%
Quiz
You observe that plants in a greenhouse grow faster when exposed to red light compared to blue light. What is the next best step in your investigation?
Correct answer
D
Rationale
The next best step in the investigation would be to grow plants exposed to both red and blue light at equal intensities. This will help determine if the observed growth difference is due to the specific wavelength of light (red vs. blue) or if it is related to the intensity of light. By exposing plants to both red and blue light at equal intensities, you can compare their growth rates and determine if one wavelength has a greater effect on plant growth.