Lateral transport of minerals and water in roots.

1. Root hairs absorb water and minerals, which move along the walls comprsing the apoplast.
   
   
2. Minerals and water that cross the plasma membranes of root hairs enter the symplast.
   
   
3. Along the apoplast some water and minerals are transported into the cytosols of cells and then move via the symplast.
   
   
4. The Casparian strip, a belt of waxy material, allows only minerals in the symplast to pass into the vascular cylinder.
   
   
5. Cells within the vascular cylinder discharge water and minerals into their walls (apoplast).