When the vascular cambium is present between the xylem and phloem,then the vascular bundle is called,

In the given diagram of a lenticel,identify the labels $A, B,$ and $C$ from the given options.

The presence of cambium in the vascular bundles provides them the ability to

Which of the following are derived from the secondary meristems?

$A$ transverse section of the trunk of a tree shows concentric rings which are known as growth rings. How are these rings formed? What is the significance of these rings?

The increase in the thickness of the stem is due to the activity of . . . . . . .