||Cuticle layer and stomata is absent usually in epidermis.
||A thick or thin layer of cuticle always covers the epidermis. In some cases, stomata are also found.
||Unicellular root hairs are present in epidermis.
||If the hair is present, it is multicellular.
||Epidermis provides protection and absorbs water and minerals from the soil.
||Epidermis is only protective in nature.
||Hypodermis is not differentiated. However, in some cases, a thick walled exodermis is present.
||A collenchymatous or sclerenchymatous hypodermis is present.
||Cortex is broad and well developed.
|| Cortex is narrow and only present in dicot stem.
||No distinct endodermis.
||Single layered pericycle present.
||In a dicot stem, usually multilayered pericycle is present.
||Pericycle is endogenous in origin as it gives rise to lateral branches of the root.
||Lateral branches are exogenous in origin.
||Radial type of vascular bundles present.
||Conjoint and collateral type of vascular bundles present.
||Root has exarch xylem.
Image source: blendspace
|Stem has endarch xylem.
Image source: ombiology
Differences between root and stem