What is the difference between vascular cambium and cork cambium....then what exactly ar intrafascicular cambium and interfasciculum cambium??pls answer in details
Dear Student
Meristem (or meristematic tissue) is composed of immature and continuously dividing cells. These cells undergo differentiation to form the other kinds of tissues.
Meristem can be further classified based on the position or locations of meristematic tissues. They are of three types- apical, intercalary and lateral meristem.
Lateral meristem: They are present on the lateral side of stems and roots. Lateral meristem is responsible for the radial growth of plants.
The lateral meristem consists of two types of tissues- vascular cambium and cork cambium.
1. Vascular cambium- It gives rise to new vascular tissue.
2. Cork cambium or phellogen- It arises later to replace the ruptured epidermis of the expanding plant body.
Some more differences between Vascular cambium and cork cambium:
Vascular cambium:
1. The Vascular cambium is the remnant part of the apical meristem. It is present between the xylem and phloem of Vascular bundle.
2. This cambium continues to divide and adds secondary phloem on its outer side surrounded secondary xylem on its inner side.
3. The vascular cambium produces primary xylem and medullary rays respectively.
Cork Cambium:
1. The cork cambium is a true secondary meristem which develops in the region outside the vascular tissues.
2. This cambium gives rise to cork and secondary cortex towards outer and inner sides respectively.
3. The cork cambium produces phellogen, phellem and phelloderm collectively known as periderm.
Difference between intrafascicular cambium and interfascicular cambium:
| Intra-fascicular cambium | Inter-fascicular cambium |
| It is a cambium developed from procambium of stem apex and present between primary xylem and primary phloem. | When secondary growth starts, the parenchymatous cells of medullary rays, lying in a line with intrafascicular cambium becomes meristematic. This forms the interfascicular cambium. It is present between two consecutive vascular bundles. |
| It is a primary meristem. | It is a secondary meristem. |
| Its derivatives during secondary growth are secondary phloem and secondary xylem. | Its derivatives include secondary xylem, secondary phloem and conjunctive tissue. |
The intrafascicular cambium and interfascicular cambium join together to form a complete cambial ring. Cambial ring undergoes division and produce new cells both on outer and inner sides of the cambial ring. These cells later form secondary xylem and secondary phloem. Hence, both these cambium playa an important role in secondary growth.
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