Question

secondary cortex is derived from ​

Answer 1

Explanation:

The secondary cortex was derived from a meristematic zone three cells wide. Early in its development it consisted, as seen in transverse section, of three tiers of radial files of cells, obviously reflecting its origin from three cell layers.

Answer 2

Answer:

The secondary cortex was derived from a meristematic zone three cells wide. Early in its development it consisted, as seen in transverse section, of three tiers of radial files of cells, obviously reflecting its origin from three cell layers........