Question

Red leaves of an plant can do photosynthesis or not?

Answer 1

Chlorophyll is one type of pigment that is part of the machinery of photosynthesis, but there are other pigments that are other colors that can do photosynthesis too.

In fact, even leaves that look green have other pigments in them. You can see these pigments when trees and shrubs lose their leaves in fall (if you live where this happens). The colors of fall leaves were in the leaves all along, but hidden by the chlorophyll.

We see different wavelengths of light as color. Sunlight has all the colors of the spectrum. When light hits an object, some colors are absorbed, others are reflected. When a leaf looks green, all of the other color are being absorbed, but green is bouncing back to your eyes.

Not all wavelengths of light have the same amount of energy. Light at the purple end has more. Light on the red end has less.

If you see an algae that looks red, what colors is it absorbing, and what colors are being reflected to your eyes?

If you are interested in questions like this, you may want to study botany or plant ecology.

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Answer 2

All plants that use photosynthesis to make sugars contain chlorophyll. Therefore, if a plant does not contain chlorophyll, it will not be able to use photosynthesis. Even though chlorophyll will be always seen as green, there are other pigments that leaves can have that are reddish that cover up the green colour.