The Root Tip has Four
Developmental Zones
Root Cap
Provides Physical Protection for
the Root Apical Meristem
Produces Lubricating
Mucopolysaccharides ("Slime") which ease soil penetration. These are
hydrophilic sugars that contain amino acids.
Perceives Gravity
May be produced by Specific
"Initials"
SEM Image of a Root Tip |
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Meristematic Zone
Produces the Primary Root Axis
Produces the Root Cap
Produces NO Lateral Appendages
Branch (Secondary) Roots arise in the
Pericycle and are identical to the Primary Roots.
Elongation Zone
Cell Divisions Cease
Rapid Cell Elongation Occurs
Maturation Zone
Cell Elongation ceases
Cells acquire specific, mature
characteristics.
Radial pattern of tissues is
apparent
Meristems-2 