Primary Root Tissues and Structure

Primary Root Tissues and Structure - Primary Root Tissues...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Primary Root Tissues and Structure The organization of tissues in the primary root is simpler than in the primary stem because no leaves  are produced on the roots and, consequently, there is no need to connect the vascular system  laterally to offshoots. The primary body, produced by the three primary meristems, consists of a  central cylinder of vascular tissue, the  stele , surrounded by large storage parenchyma cells—the  cortex —on the outside of which lies a protective layer of cells—the  epidermis Epidermis The root hairs of the young epidermal cells vastly increase the surface area through which  movement of materials can occur. The thread-like hairs are simply enlargements of the protoplast  that extend outward into the soil. They have little wall material and are extremely fragile and easily  broken. The root epidermis of some plants is covered by a thin, waxy 
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Ask a homework question - tutors are online