It’s actually more efficient to capture all wave lengths of solar store it in a battery and then only produce the wavelengths that the plants can absorb.
https://www.scientificamerican.com/article/plants-versus-pho...
https://www.scientificamerican.com/article/plants-versus-pho...
Chewing on bark will work, if you have enough bark, but it’s significantly more effective to use a fungus as an intermediary.