Question

capillary action is one of the forces that moves water from the roots of a plant to its leaves. water moves through plant cells called xylem cells. xylem cells are arranged vertically in long, thin columns. the adhesive forces between water molecules and cell walls are stronger than the cohesive forces between water molecules. as water moves along xylem cell walls, cohesive forces help keep water molecules together. so, both adhesive and cohesive forces help move water from the roots of a plant through its stem to its leaves. select the true statements. cohesive forces between water molecules help water molecules stick together as water moves up through a plant. adhesion between water molecules helps water climb up the sides of xylem cells. for capillary action to occur, adhesive forces must be stronger than cohesive forces. gravity exerts a downward force on water moving up through a plant.

Explanation:

• Cohesive forces keep water - molecules together as stated in the text.
• Adhesion is between water and xylem cell walls, not water - water. The statement about adhesion between water molecules is incorrect.
• Capillary action occurs when adhesive forces between water and xylem cell walls are stronger than cohesive forces between water molecules.
• Gravity acts downward on water moving up the plant.

Answer:

• Cohesive forces between water molecules help water molecules stick together as water moves up through a plant.
• For capillary action to occur, adhesive forces must be stronger than cohesive forces.
• Gravity exerts a downward force on water moving up through a plant.