| Dicot root | Monocot root |
|---|---|
| $(1)$ Exodermis is not distinct under the epidermis. | $(1)$ Exodermis is present below the epidermis. |
| $(2)$ In the endodermis,thickening is in the form of Casparian strips. | $(2)$ In the endodermis,thickening is $C$-shaped or $U$-shaped. |
| $(3)$ Xylem and phloem bundles are fewer in number (usually $2$ to $4$). | $(3)$ Many xylem and phloem bundles are present (polyarch condition). |
| $(4)$ Root is typically tetrarch. | $(4)$ Root is polyarch. |
| $(5)$ Phloem parenchyma is present. | $(5)$ Phloem parenchyma is absent. |
| $(6)$ Secondary growth occurs in older roots. | $(6)$ Secondary growth is absent. |
| $(7)$ Pith is small or absent. | $(7)$ Pith is large and well-developed. |
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