Which region is where cells produced by mitosis undergo elongation in the direction of the axis of the root?

Which region is where cells produced by mitosis undergo elongation in the direction of the axis of the root?

• A. Region of Meristematic Activity
• B. Region of Maturation
• C. Region of Differentiation
• D. Region of Elongation

Answer: (D)

The idea being tested is how root growth happens through distinct zones, with cells moving from division to elongation to maturation. After cells are produced by division in the meristem, they enter the elongation region, where they expand in length mainly along the root’s axis. This longitudinal enlargement is driven by water uptake into the enlarging vacuoles and by loosening of the cell walls, allowing the cells to stretch without becoming fully differentiated yet. As they continue to elongate, they eventually reach the maturation region, where cells stop lengthening and begin to differentiate into specialized tissues like epidermis, cortex, and vascular tissue. So, the elongation region is the stretch where newly formed cells grow longer in the direction of the root, driving the root’s growth in length.

The idea being tested is how root growth happens through distinct zones, with cells moving from division to elongation to maturation. After cells are produced by division in the meristem, they enter the elongation region, where they expand in length mainly along the root’s axis. This longitudinal enlargement is driven by water uptake into the enlarging vacuoles and by loosening of the cell walls, allowing the cells to stretch without becoming fully differentiated yet. As they continue to elongate, they eventually reach the maturation region, where cells stop lengthening and begin to differentiate into specialized tissues like epidermis, cortex, and vascular tissue. So, the elongation region is the stretch where newly formed cells grow longer in the direction of the root, driving the root’s growth in length.