Water transport in trees via the cohesion-tension theory involving water molecule cohesion and adhesion to xylem walls is a well-established biological fact that requires no citation.
The claim states that trees utilize adhesion and cohesion forces to transport water against gravity, which describes the standard cohesion-tension mechanism of plant sap ascent. Because this is a foundational and universally observed biological truism taught in basic science, it falls under common knowledge, requiring no citation or paper evaluation.