Exarch protoxylem is found in .........

Water does not pass through which of the following structures due to the presence of suberin?

Which of the following is not a characteristic feature of the anatomy of a dicotyledonous root?

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:

In dicot roots,cells of which region show Casparian strips?

What are passage cells?