Question Details	Asked By	Asked On
Question on Botany	trunl	12/06/03
I am doing a science project at school, and need an answer to a question by an expert. I need the answer by Sunday afternoon, so if you cannot answer by then, then disregard the question. Please answer the following questions in full length. How does colored light effect plant growth? What color would make plants grow the most? Why? Thank you for your time, Jeff
Answered By		Answered On
MisterBio		12/06/03
As you may know, white light is composed of many different wavelengths. Each of these produces a different color. When white light strikes chlorophyll, some wavelengths are reflected or transmitted through. These are not used in photogynthesis or plant growth. The wavelengths that are absorbed are the ones used. Experiments show that green plants are green because they reflect the green and yellow wavelenths and absorb the blue-violet and the red-orange wavelengths. So, placeing plants in blue and or red-orange will produce growth, but if placed in green or yellow, they will die. These absorbed wavelengths are absorbed by chlorophyll and converted into chemical energy during photosynthesis. I don' know to what degree you want information, so let me know if you need more detail or have questions. Good luck; MisterBio

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