What is the most widely accepted and supported model for explaining the movement of phloem sap in flowering plants?

Question

Quizplus · Accepted Answer

The pressure-flow mechanism is the most widely accepted and supported model for explaining the movement of phloem sap in flowering plants. It describes how dissolved sugars are transported from sources, like leaves, to sinks, such as roots and fruits, driven by pressure differences.

What Is the Most Widely Accepted and Supported Model for Explaining