Zones Or Parts of a Root

Root cap

► The tender apex of the root is protected with a multicellular cap like structure called root cap.
► The cells of the root cap secrete mucilage for lubricating the passage of root through the soil.
► Multiple root cap is present while in aquatic plants

Meristematic Zone

► This zone is present just above the root cap
► It is a small region about 1mm in length
► It is made up of thin walled, compactly arranged meristematic cells which have the power of division.
► This region helps in longitudinal growth by the addition of new cells

Elongation Zone

► This zone consists of elongated cells
► It lies just above the meristematic region.
► It increases the length of the root.
► The cells of this region help in the absorption of mineral salts

Maturation Zone

► Surface of this area is covered with numerous root hairs.
► The root hairs are elongated, single celled, tubular structures which remain in contact with soil particles.
► The root hairs increase the surface area of absorption.
► Its responsible for absorption of water.
► This region helps in fixation of plant body into the soil and also in conduction of absorbed substances.
► Lateral roots also develop from this region of the root.

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