How is the organization of vascular tissues in monocot stems

How is the organization of vascular tissues in monocot stems different from the organization of vascular tissues in eudicot stems?

Solution

Dicot stem Monocot stem Hypodermis is collenchymatous Hypdermis is sclerenchymatous Vacular bundles are arranged in circular form Vacular bundles are scattered throughout the ground tissue Xylem elements are polygonal Xylem elements are circular Vascular bundles are limited from 4 to 8 in number Vascular bundles are numerous Pericycle is present Pericycle is absent Pith is present Pith is absent Phloem parenchyma and phloem fibres are present Phloem parenchyma and phloem fibres are present Vascular bundles are not surrounded by bundle sheath Vascular bundles are surrounded by sclerenchymatous bundle sheath Medullary rays are present Medullary rays are absent Ground tissue is differentiated into stelar and extra-stelar tissues Ground tissue is not differentiated Endodermis is present Endodermis is absent Vascular bundles are conjoint, collateral and open Vascular bundles are conjoint, collateral and closed Protoxylem lacuna absent Protoxylem lacuna present