But if we realize that all of plant biology arises from the evolutionary constriction of the “rootedness” that keep plants immobile, then we can start to appreciate the very sophisticated biology going on in leaves and flowers.
If you think about it, rootedness is a huge evolutionary constraint. It means that plants can’t escape a bad environment, can’t migrate in the search of food or a mate. So plants had to develop incredibly sensitive and complex sensory mechanisms that would let them survive in ever changing environments.
I mean if you’re hungry or thirsty, you can walk to the nearest watering hole (or bar). If you’re hot, you can move north, if you’re looking for a mate, you can go out to a party. But plants are immobile. They need to see where their food is. They need to feel the weather, and they need to smell danger. And then they need to be able to integrate all of this very dynamic and changing information.
Just because we don’t see plants moving doesn’t mean that there’s not a very rich and dynamic world going on inside the plant.
See on www.scientificamerican.com