Stem
Mostly epidermis is covered by distinct cuticle.
Stem hairs are either unicellular or multi cellular they are separated from epidermal cells by walls.
Stomata may occur in epidermis.
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Cortex is generally differentiated into zones like hypodermis, general cortex and endodermis.
Hypodermis is either collenchymatous or selerenchymatous.
Endodermis lacks casparian strips; cells of endodermis contain starch grains.
Pericycle is not present in all stems.
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Lateral branches are superficial.
They do not develop from pericycle.
Vascular bundles are conjoint, collateral or concentric.
Xylem is end arch.
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Root
Epiblema lacks cuticle.
Root hairs are unicellular.
They are not separated from cells of epiblema by walls.
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Stomata are absent.
Cortex is an undifferentiated mass.
Hypodermis is absent.
Thick walled exodermises is present in some roots in its place.
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Endodermis is distinct with casparian strips, pericycle is present.
Lateral roots arise from pericycle.
Vascular bundles are radial in arrangement.
Xylem is exarch.