The zone of a root tip that increases the surface area for water and dissolved mineral uptake is the zone of elongation.

Here's why:

* Root Hairs: The zone of elongation is where root hairs develop. These tiny, hair-like projections extend from the root epidermal cells and dramatically increase the surface area available for absorption.

* Absorption: The increased surface area provided by root hairs allows for more efficient absorption of water and dissolved minerals from the soil.

Let me know if you have any more questions about plant anatomy or physiology!