The unbroken column of water from the roots to the highest leaves is kept intact by

Question

Quizplus · Accepted Answer

The unbroken column of water from the roots to the highest leaves is kept intact by cohesion, which is the binding together of water molecules due to hydrogen bonding. This allows water to be pulled up through the xylem vessels by transpiration (water loss from leaves), creating tension or negative pressure that drives the movement of water. Atmospheric pressure does not directly contribute to the maintenance of the water column. Evaporation is a result of transpiration and contributes to the loss of water from the leaves, but it does not help maintain the column.

The Unbroken Column of Water from the Roots to the Highest