I've been conducting an experiment with different colored light and photosynthesis, and so far my hypothesis states that red light will grow the plant, green will slow or kill it, and white will grow it as normal.

I'm wondering what would happen with blue, yellow, and orange.



closed as too broad by David, another 'Homo sapien', AMR, Bryan Krause, kmm May 31 '17 at 0:12

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ You know what they say, do the experiment and find out. Just remember to include controls. $\endgroup$ – AMR May 24 '17 at 17:40

Your thought process should revolve around optimal spectrum for photosynthesis, since whether that happens sufficiently will determine the health of your plant. Just poking around, I found this document.

What light will be usable for photosynthesis depends on which version of light absorbing protein is being used to capture energy from photons.

This diagram would indicate that pure yellow would be pretty ineffective for any pigment. Blue is fine, as is darker orange/red for chlorophyll A and B.

Keep in mind that a lightbulb, unless a very special one, will still have lots of other spectrum bleed. It won't be a pure single color (even though it may look like a single color to your eye).

enter image description here

Another source from Khan Academy. enter image description here


Not the answer you're looking for? Browse other questions tagged or ask your own question.