Question:
Vascular cambium produces
Vascular cambium produces
Updated On: Jul 3, 2023
- primary xylem and primary phloem
- secondary xylem and secondary phloem
- primary xylem and secondary phloem
- secondary dylem and primary phloem.
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The Correct Option is B
Solution and Explanation
Vascular cambium produces secondary xylem and secondary phloem. It is developed from the procambium which is an embryonic tissue, hence it is primary in origin. It is secondary in function for it forms the secondary tissues like secondary xylem, secondary phloem, and secondary medullary rays. The cambium is a radially one-cell thick zone of meristematic cells.
Explanation:
- In each vascular bundle, xylem and phloem are separated by tissues called vascular cambium.
- Vascular cambium is a ring of cambium formed by joining of intrafascicular and interfascicular cambium.
- In dicot stem, the cambium located between the primary xylem and phloem is called the intrafascicular cambium.
- Medullary rays' cells join the intrafascicular cambium and turn into meristematic tissues to form the interfascicular cambium as a continuous ring of cambium.
- Cambial ring activates and cuts off the new cells. both the inner and outer side.
- New cells formed towards the pith develop into secondary xylem and the new cells that are formed towards the periphery develop into the secondary phloem.
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