Michael F. answered 09/28/21
BSc in Molecular biology with a minor in physics
When thinking about plant stems.. We consider that...
In plants the apical meristem an undifferentiated tissue is a region of stem cells capable of growth and division... During growth and division this tissue will differentiate in three tissue types, the protoderm, or the provascular tissue, or the ground meristem.
The protoderm differentiates further into the epidermis...
The provascular tissue differentiates further into the primary xylem and primary phloem...
The ground meristem differentiates further into the pith and cortext.