The layer of cells outside the phloem meant for giving rise to the root branches is called

What part of the plant would show the following:
$(a)$ Radial vascular bundle
$(b)$ Polyarch xylem
$(c)$ Well developed pith

In the diagram of $T.S.$ of the stele of a dicot root,the different parts have been indicated by alphabets; choose the answer in which these alphabets correctly match with the parts they indicate.

Identify $P, Q,$ and $R$ in the given anatomical structure.

Casparian strip is found in

How does a monocot root differ from a dicot root?