What are secondary medullary rays?

Question

What are secondary medullary rays? (A) Narrow band of parenchyma (B) Arranged transversely (C) Dead and lignified (D) Formed by primary cambium

Tardigrade Admin · Accepted Answer

During secondary growth, at some places, the cambium forms a narrow band of parenchyma, which passes through the secondary xylem and the secondary phloem in the radial directions. These are the secondary medullary rays.

Q. What are secondary medullary rays?

Narrow band of parenchyma

Arranged transversely

Dead and lignified

Formed by primary cambium

During secondary growth, at some places, the cambium forms a narrow band of parenchyma, which passes through the secondary xylem and the secondary phloem in the radial directions. These are the secondary medullary rays.