Question

question 5. which statement describes how water is pulled up through the xylem to the leaves of the plant? a. evaporation of water from the leaf increases the hydrogen bonds that form between water molecules in the air, providing the energy for transport. b. evaporation from the leaf decreases the hydrogen bonds that form between the water molecules in the xylem, which helps the water molecules to be pulled up the xylem. c. as water exits the leaf, hydrogen bonding between water molecules pulls more water up from below. d. as water exits the leaf, signals are sent to the roots to pump more water up to the leaves through the xylem by adhesion.

Explanation:

Transpiration - cohesion - tension theory explains water transport in plants. Evaporation from the leaf (transpiration) creates a negative pressure. Cohesion (hydrogen - bonding between water molecules) allows water to be pulled up as a continuous column through the xylem.

Answer:

C. As water exits the leaf, hydrogen bonding between water molecules pulls more water up from below