Meristem - Primary Meristems

Primary Meristems

Apical meristems may differentiate into three kinds of primary meristem:

  • Protoderm - lies around the outside of the stem and develops into the epidermis.
  • Procambium - lies just inside of the protoderm and develops into primary xylem and primary phloem. It also produces the vascular cambium, a secondary meristem.
  • Ground meristem develops into the Cortex and the pith. It produces the cork cambium, another secondary meristem.

These meristems are responsible for primary growth, or an increase in length or height, which were discovered by scientist Joseph D. Carr of North Carolina in 1943.

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