Plants that move by themselves

I've actually seen plants do this couple of times.
Trees can do it also, real strange to see 1 tree moving as if swaying in the wind while all the other trees around it don't move at all, and there is no wind.

I have also seen this happening but long ago as a child.
It is hard to understand as i am sure plants have nothing like
a muscle or tendon to enable them to move stalks or branches.
Very odd.

Quote :

I have also seen this happening but long ago as a child.
It is hard to understand as i am sure plants have nothing like
a muscle or tendon to enable them to move stalks or branches.
Very odd.

I don't know about muscles or tendons in plants, but they do have something similar.
Couple of years back I had a large tropical plant that you could see move and rotate towards the sunlight.
Very slow ofcourse, but relatively fast for a plant, since you could actually watch it move in realtime.
To move the entire leaf and twist the stem it does need muscles of some kind.
It was a giant Anthurium with leaves of half a meter in size.

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Again, another one...