Secondary Growth in Stems 1,2,3 |
| Vascular Cambium (VC) |
| Shoot Apical Meristem -> Procambium -> Primary Phloem & Xylem |
| Residual Procambium between Primary Phloem & Xylem Remains Meristematic -> Vascular Cambium |
| Vascular Cambium divides Periclinally -> Files of Cells |
| Cells displaced towards the inside -> Secondary Xylem |
| Cells displaced towards the outside -> Secondary Phloem |
| Cells of the Interfascicular Zone -> Induced to Divide |
| Vascular Cambia Merge -> Continuous Ring |
| Further Cambial Activity -> Secondary Xylem -> Wood |
| Wood Volume Increases -> Pressure -> Crush Oldest Phloem |
| Active Phloem produced by the VC |
| Cork Cambium |
| Shoot Apical Meristem (SAM) -> Protoderm -> Epidermis |
| SAM -> Ground Meristem -> Cortical Parenchyma |
| Cortical Parenchyma -> Cork Cambium -> Cork (Periderm) |
| Epidermis -> Demise -> Replaced by Outer Cork |
