A = Root hair: Fine, thread-like structures that increase surface area for water absorption.

B = Region of maturation: The zone where cells differentiate into specific types (like xylem and phloem) and where root hairs are located.

C = Region of elongation: The area where cells rapidly increase in length, responsible for the root's growth in depth.

D = Region of meristematic activity: A small zone of actively dividing cells at the tip.

E = Root cap: A thimble-like structure that protects the tender tip as it pushes through the soil.