The part of a tree that carries water from the roots to the leaves is the xylem.

Here's how it works:

* Roots: The roots absorb water and dissolved minerals from the soil.

* Xylem: The xylem is a network of hollow, dead cells that form tubes running throughout the tree. Water is pulled upwards through these tubes by a combination of forces, including transpiration (evaporation of water from leaves) and capillary action.

* Leaves: The water reaches the leaves where it's used in photosynthesis.

Think of the xylem as the plumbing system of a tree, transporting essential nutrients and water throughout its entire structure.