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

Girth of a dicot stem is increased by

If a nail is driven into the trunk of a mango tree at a height of $2 \ m$ above the ground,what will be the height of the nail after $5$ years?

In a dicot stem,the interfascicular cambium strip arises

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A$: Late wood has fewer xylary elements with narrow vessels.
Reason $R$: Cambium is less active in winters.
In the light of the above statements,choose the correct answer from the options given below:

In a typical dicot stem,the cork cambium $(phellogen)$ develops from: