Question

In a mature dicot stem which has undergone secondary growth, youngest layer of secondary xylem is situated

• A. in between pith and primary xylem
• B. just outside the vascular cambium
• C. just inner to the vascular cambium
• D. just inner to the phellogen

Answer 1

The Correct Option is C

The cambial ring present between primary xylem and primary phloem becomes active and begins to cut off new cells, both towards the inner and the outer sides. The cells cut off towards pith mature into secondary xylem and the cells cut off towards periphery mature into secondary phloem.