It could mean it is your turn or it could mean that you are awake. For example, I say to you, "oh, you are up" like I wasn't expecting you to be awake. It is a question. It can also mean it is your turn. Say you are playing baseball and it is your turn and someone says to you, "you're up" meaning now it is your turn. I hope I didn't confuse you.

it mean v r growing up r else devolping in every way

Yes you get it: The guy before you has taken his turn... You are up.