NEET · BiologyHard
In a dicot stem, the vascular cambium is initially formed from which of the following tissues during the process of secondary growth?
- A.Intrafascicular cambium and interfascicular cambium
- B.Primary meristematic cells of the procambium only
- C.Intrafascicular cambium and medullary ray cells
- D.Phellogen and phelloderm
Show correct answer & step-by-step solution
Correct answer: C — Intrafascicular cambium and medullary ray cells
Solution
- The vascular cambium originates from the intrafascicular cambium present within the vascular bundles.
- During secondary growth, the cells of the medullary rays adjacent to the intrafascicular cambium undergo dedifferentiation.
- These dedifferentiated cells form the interfascicular cambium.
- The union of intrafascicular and interfascicular cambium forms a complete ring.
- Hence the answer is (C).
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