Answer:
(a) Meristematic cells
near root tip The cells of this region are called Root Apical Meristems (RAM)
and are in active state of division, thus their number increases continuously.
The cells of this region are thin walled with dense cytoplasm and large nucleus.
They have the ability to divide and self perpetuate.
(b) The
Cells in the Elongation Zone of the Root This region is situated just above the
meristematic zone. In the cells of this zone, a large number of small vacuoles
develop and later these vacuoles fuse to form one large central vacuole filled
with cell sap. The cells are elongated in this region.
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