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why photosynthesis takes place in blue and red light?
On a wave length scale, the red light has more energy than blue light. But high photosynthetic activity is observed under blue light. Why not this happen in red light as this light carries more energy than blue light??. Do photosynthetic activity occurs in other colours of light like Violet, Indigo, orange, yellow etc?
4 Answers
- Anonymous1 decade agoFavorite Answer
> why photosynthesis takes place in blue and red light?
Um, because the sun gives out a useful amount of light in those ranges.
> red light has more energy than blue light
False. Shorter wavelengths have higher energy.
> high photosynthetic activity is observed under blue light
Because photosynthesis takes place in red and blue light. *shrug*
> Do photosynthetic activity occurs in other colours of light like Violet, Indigo, orange, yellow etc
Yes. Check the absorption spectra of the chlorophylls. It's not just a single peak at "red" and "blue." Those peaks are actually quite wide. Also, ancillary pigments, e.g. carotenoids, can assist in light absorption.
- Anonymous1 decade ago
Looks like its time you do an experiment buddy. Buy some Violet, Indigo, orange, and yellow lights and put plants under them. How do you measure photosythetic activity anyway?
- ?Lv 51 decade ago
chlorophyll activates in presence of light of 680 and 700 nanometer wavelength and fortunately one of them is blue and other is red
