Answer is : (a) protoderm, procambium, ground meristem
On the basis of functions, the meristematic tissue is divided into protoderm, procambium and ground meristem.
Protoderm is the outermost meristematic layer of apical meristem which develops into epidermis. Procambium is located inside protoderm and gives rise to primary vascular tissue.
Ground meristem is the precursor of ground tissue which forms pith, cortex, hypodermis and pericycle.
