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.

ADVERTISEMENTS:

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.

ADVERTISEMENTS:

Lateral branches are superficial.

They do not develop from pericycle.

Vascular bundles are conjoint, collateral or concentric.

Xylem is end arch.

ADVERTISEMENTS:

Root

Epiblema lacks cuticle.

Root hairs are unicellular.

They are not separated from cells of epiblema by walls.

ADVERTISEMENTS:

Stomata are absent.

Cortex is an undifferentiated mass.

Hypodermis is absent.

Thick walled exodermises is present in some roots in its place.

ADVERTISEMENTS:

Endodermis is distinct with casparian strips, pericycle is present.

Lateral roots arise from pericycle.

Vascular bundles are radial in arrangement.

Xylem is exarch.