In a vascular bundle,if xylem vessels develop in a centripetal fashion,the xylem is likely to be

The secondary wall material suberin is deposited on the walls of

What are passage cells?

Given below are two statements:
Statement $I:$ Endarch and exarch are the terms often used for describing the position of secondary xylem in the plant body.
Statement $II:$ Exarch condition is the most common feature of the root system.
In the light of the above statements,choose the correct answer from the options given below:

The innermost layer of the cortex is called

Tetrarch vascular bundles are found in ...............