The ruptere and fractionation do not usually occur in water column in vessel/trachieds during the ascent of sap because of

Step-by-step solution

The vertical conduction of water from root to arial part of plant is called ascent of sap. The water molecules remain joined to each other due to a force of attraction called cohesion force. Attraction between water molecules and the walls of xylem is due to adhesion forces. These forces help to ensure the continuity of water column in xylem.