AP BIOLOGY

Detailed explanation-1: -Capillary action helps bring water up into the roots. But capillary action can only “pull” water up a small distance, after which it cannot overcome gravity. To get water up to all the branches and leaves, the forces of adhesion and cohesion go to work in the plant’s xylem to move water to the furthest leaf.

Detailed explanation-2: -Because water molecules like to stick together (cohesion) and like to stick to the walls of the tubes of cellulose (adhesion), they rise up the tubes all the way from the roots to the leaves. Water then evaporates from the leaves, helping to draw up more water from the roots. This process is called capillary action.

Detailed explanation-3: -As water molecules evaporate from plant leaves, they attract the water molecules still in the plant, helping to pull water up through the stems from the roots. The combination of transpira-tion and capillary action delivers the water from the bottom to the top of a plant.

Detailed explanation-4: -Capillary Action Definition Plants use two different transport systems, both of which are rows of cells which form tubes around the plant.. The xylem transports water and minerals from the roots to the leaves while the phloem moves food substances from leaves to the rest of the plant.

Detailed explanation-5: -Capillary action is seen in plants when water is able to ascent from the root upward through the xylem tissues of a plant. Water uptake involving capillary action is also seen in some small animals, e.g. Ligia exotica (sea roach) and Moloch horridus (thorny dragon). Synonym(s): capillarity.