MORPHOLOGY OF ROOT

Root is the underground, non green part of plant. IT does not posses nodes or buds but many poses branches. It helps in absorption and anchorage. It consists of following regions.
PARTS OF ROOT:

1. ROOT CAP: It is the cap like structure lying at the tip of root. It protects the tender growing apex of the root against friction from soil particles. Its cells have mucilaginous wall which lubricate the passage of root in the soil.
2. MERISTEMATIC REGION(REGION OF CELL DIVISION):It lies just behind root cap and constitutes about 1cm in length. It consists of thin walled, compactly arranged, isodiametric cells which have capacity of division. This region produces new cells. So, this region helps in the growth of Root.
3. REGION OF ELONGATION: It lies behind the growing point and about 4-8 mm in length.Cells of this region are newly formed but have lost the power of division. These cells elongate rapidly and help in the increase of length of root.
4. REGION OF ROOT HAIR:It is 1-6mm in length and lies behind region of elongation. The epidermal cells of this region give to lateral tubular outgrowth called root hairs.Root hairs in absorption.As root hairs become older,they do not function and new root hairs produced from the older part of region of elongation.
5. REGION OF MATURATION:This region forms the bulk of the root. This region doesn't help in absorption. Lateral branches of the root arises from this region.This region helps to anchor the plant firmly in the soil.