Primary
vs Secondary Growth-1
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Primary Growth refers to
all cells & tissues  produced directly by Derivatives of Apical Meristems. The heirearchy of tissue production starts with the Apical Meristem. This produces Primary Meristems which have distinguishing characteristics like the type of cell divisions which occur and their position within the apex. For instance, the Protoderm is a unicellular layer on Cells produced by Primary Meristems differentiate to form Primary Tissues. There are three Primary Meristems & three Primary Tissues.
Apical Meristem
Primary Meristems -> Primary Tissues Protoderm ->Epidermis Ground
Meristem ->Ground Tissues Procambium->Vascular Tissues
Primary Growth is responsible for Elongation in all parts of a Plant which include, Stems, Roots, Leaves & Reproductive Structures. |
