Cortex is comparatively narrow.
Pericycle is single layered.
Pericycle produces lateral roots cambium and cork cambium.
Vascular bundles range from two to six in number.
Xylem vessels are angular.
Pith is not well developed or absent
Secondary growth takes place.
Cortex is wide.
Pericycle is often multilayered.
Pericycle produces lateral roots.
Vascular bundles are more than six in number.
Xylem vessels are oval or rounded.
Pith is well developed.
Secondary growth does not take place.