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What do you think of when you hear the term “circadian rhythm”? For most of us, it’s “jet lag”, because that’s the way we’ve likely encountered it. But “circadian”, which refers to anything biological that goes through a cycle in about 24 hours, applies to many aspects of the lives of plants, animals, and even bacteria.

A flower led the way

Daily variations in the behaviors of plants and animals have been known about since antiquity.Read the rest “Circadian Rhythm I – the plant world”