Botany - Morphology of Flowering Plants Question with Solution | TestHub
Considering the longitudinal section of a root, starting from the tip, identify the correct order for the arrangement of the four different zones?
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Solution:
The root system of a plant develops from the hypocotyl of the embryo. The root shows the following four regions which usually merge into one another, without distinct boundaries between them. The four zones, successively from the apex to the base are:
Root cap zone: The apex of each root is covered by a cushion of thin-walled cells known as root cap.
Region of cell division: It lies just behind the root cap. It is the main growing region of the root where active cell divisions take place.
Region of elongation: The region of elongation is responsible for growth in length of the root.
Region of maturation: Epidermal cells of this region give out small, thin, cylindrical unicellular outgrowth, known as root hairs. These are the main absorbing organs of the root.
