What does the phase of elongation NOT involve?

Step-by-step solution

Further away from the apex, i.e., more proximal to the phase of elongation, lies the portion of the axis which is undergoing the phase of maturation. The cells of this zone attain their maximal size in terms of wall thickening and protoplasmic modifications. Increased vacuolation, cell enlargement and new cell wall deposition are the characteristics of the cells in this phase