The answers can be inferred on Earth. Most photosynthetic organisms on Earth are not deciduous trees and don't have seasonal cycles. All of them do maintain cir

The answers can be inferred on Earth. Most photosynthetic organisms on Earth are not deciduous trees and don't have seasonal cycles. All of them do maintain circadian cycles to cope with the much faster and more dramatic day/night cycle. Or most? I know the cyanobacteria do and I'm pretty sure the purple bacteria do. The bacteriorhodopsin-users might not. If you call that photosynthesis.