Question

Secondary medullary rays are produced by-

• A. Fusiform initials
• B. Interfascicular cambium
• C. Phellogen
• D. Ray initials

Answer 1

The correct option is D Ray initials

Secondary medullary rays are formed by vascular cambium and pass through secondary xylem and phloem as radiating strips.
Medullary rays store and transport food.
Fusiform initials produce the conducting cells in both secondary xylem and secondary phloem.
Ray initials gives rise to cells in the ray system.
So, the correct answer is ray initials.


Secondary medullary rays are formed by vascular cambium and pass through secondary xylem and phloem as radiating strips.