watered up, down, all around

Do you think the root which must go off in search of its own water is in any way stronger than the one which directly receives the water it needs?  They both get what they need, right?  Is strength more important, or the simple reception of the water, itself?  In both cases, the plant receives a way to live.  Is that it, the everything's pervasive will to live and live toward more life?  Is there more to it than that?