In a Woody Stem,xylem and Phloem are Produced by The

Question

In a woody stem,xylem and phloem are produced by the
A) vascular bundle.
B) companion cells.
C) sieve tube.
D) casparian strip.
E) vascular cambium.

Accepted Answer

Xylem and phloem are produced by the vascular cambium, a layer of undifferentiated cells between the xylem and phloem. As the cambium cells divide and differentiate, they produce new xylem cells on the inside and new phloem cells on the outside, eventually leading to the formation of the vascular bundle.