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.