Question 1 • EA Academy Online Learning and Digital Citizenship Elective Spring
Answer:
To transport water from the roots to the leaves of a tall tree, plants rely on the unique properties of water caused by its polar nature and hydrogen bonds. Cohesion is the attraction that makes water molecules stick to one another, creating a continuous water column. Adhesion is the attraction between water molecules and the walls of the tree's xylem vessels, which helps the water move against gravity. These two forces work together to produce capillary action, allowing water to climb upward. As water evaporates from the leaves, it pulls the entire column of water up from the roots.