12 Questions around this concept.
In barley stem vascular bundles are:
Water-containing cavities in vascular bundles are found in :
A conjoint and open vascular bundle will be observed in the transverse section of
Comparison between vascular bundles of Monocots and Dicots
|
VASCULAR BUNDLES OF DICOT STEM |
VASCULAR BUNDLES OF MONOCOT STEM |
|
Uniform in size |
Vary in size |
|
Conjoint, collateral or bicollateral, open |
Conjoint, collateral and closed |
|
Phloem parenchyma present |
Phloem parenchyma absent |
|
Bundle sheath absent |
Bundle sheath present |
|
Water containing cavity absent |
Water containing cavity present; called protoxylem lacuna |
|
vascular bundles arranged in a ring |
vascular bundles scattered |
|
ROOT |
STEM |
|
Misty in colour and irregular shaped |
Usually green and erect |
|
Nodes and internodes distinctly visible |
Nodes and internodes not well visible |
|
Unicellular epidermal hair called root hair arise |
Multicellular or unicellular epidermal hairs called trichomes arise |
|
Hypodermis nor differentiated |
Hypodermis well differentiated |
|
Cortex broad and well developed |
Cortex is less developed |
|
Passage cells present in endodermis |
Passage cells absent in endodermis |
|
Pericycle single layered and parenchymatous |
Pericycle multi layered and sclerenchymatous |
|
Vascular bundles are radial types |
Vascular bundles conjoint type |
|
Exarch primary xylem |
Endarch primary xylem |


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