Answer:
What has roots that nobody sees and is taller than trees. Up up up it goes and yet never grows?
Open me, and you can't see me without a mirror. Close me and you can't see me at all. What am I?
I dance on one feet and knows only one shape. Someone with same name as me is very good with directions
I hatch without food
I march before armies a thousand salute me. My fall can bring victory but no one would shoot me. The wind is my lover one-legged am I. Name me and see me at home in the sky.
Give it food and it will live, give it water and it will die.