Comment by SoftTalker
4 days ago
Some plants do change to a "night" configuration though (closing leaves or petals, etc). Not sure if you could call it sleep.
4 days ago
Some plants do change to a "night" configuration though (closing leaves or petals, etc). Not sure if you could call it sleep.
I would be surprised by any organism that can sense its environment and doesn’t change behaviour at night. The difference is pretty extreme, whether its temperature, light or just all other beings changing what they’re doing. Even if you don’t notice yourself, you’ll probably be affected by second-order effects.
The simplest example that seems like it would be an exception to your criteria would be an amoeba.