The position of the oldest layer of secondary xylem is :-

The oldest layer of secondary phloem is

The oldest layer of secondary phloem is

Youngest layer of secondary xylem is located

In a six year old stem, the oldest layer of secondary xylem is situated just

In a five year-old stem the oldest layer of secondary xylem is situated just outside the primary xylem.

The oldest layer of secondary phloem in a stem lies

Outer layer of secondary xylem is ·called _____

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