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