why do water lillies only open during the day?
why do water lillies only open during the day?
what bad thing is going to happen at night, that they feel the need to expend the energy
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I did try googling this first.
Surface area is evaporative exposure and frost exposure, might not matter much to temperate acclimated plants but it may be an evolutionary holdover. Also plants don't really expend energy to modulate their bodies. It's more about moving water around their internals.
Moving may also prevent some fungus or algae colonization.
Also plants don't really expend energy to modulate their bodies. It's more about moving water around their internals.
Yes, but no. The energy expenditure is there, just not in the same way as animals and motile single-celled organisms. It's, to borrow from software engineering, "left-shifted". Plants invest the energy into building structures in their bodies that can be actuated via environmental changes. So, for example change in temperature between day and night may change hydrostatic pressure, which in turn causes motion (opening and closing the blossom).