Can anyone explain me about protoderm, ground meristem and procambium?
Protoderm, ground meristem and procambium are primary meristems that are responsible for initial or primary growth in plants and are present at the tips of roots, stems and axillary buds (apical meristems). Thus these three kinds of primary meristems are differentiated from apical meristems.
Protoderm- It give rise to epidermis or dermal tissue and is formed by peripheral cell layer. For example, it is present outside the stem and give rise to epidermis.
Ground meristem- Ground meristem is embryonic tissue which get differentiated into cortex and pith.
Procambium- It is present inside the protoderm and give rise to primary vascular tissue i.e primary xylem, primary phloem and pericycle ( in roots). Vascular cambium, cork cambium and secondary meristems are also produced by this meristem. Cork cambium again give rise to phelloderm and phellum or cork.
Protoderm- It give rise to epidermis or dermal tissue and is formed by peripheral cell layer. For example, it is present outside the stem and give rise to epidermis.
Ground meristem- Ground meristem is embryonic tissue which get differentiated into cortex and pith.
Procambium- It is present inside the protoderm and give rise to primary vascular tissue i.e primary xylem, primary phloem and pericycle ( in roots). Vascular cambium, cork cambium and secondary meristems are also produced by this meristem. Cork cambium again give rise to phelloderm and phellum or cork.