Root Hairs - cell extensions of epidermis increase absorptive surface
Epidermis - water and non-selective mineral intake via root hairs
Cortex - storage parenchyma (starch, sugar, etc.)
Vascular Cylinder:
Endodermis - selective mineral pump (concentrates particular minerals as it pumps them into xylem area)
Pericycle - origin of lateral roots in young areas, bark on older roots
Phloem - conducts nutrients from leaves
(Cambium) - makes wood-woody plants only
Xylem - conducts minerals and water up
Go back to the Course Schedule.
Go to an Overview about roots.