LIFE SCIENCE

Detailed explanation-1: -Xylem vessels carry water and minerals from the roots to the leaves. Phloem tubes carry sugar & other organic nutrients made by the plant from the leaves to the rest of the plant.

Detailed explanation-2: -The xylem transports water and minerals from the roots up the plant stem and into the leaves. In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels. Vessels: Lose their end walls so the xylem forms a continuous, hollow tube.

Detailed explanation-3: -The water is pulled up through the xylem via osmosis so that the vessel is filled with an uninterrupted column of water. This column will make its way up through the xylem until it evaporates from the mesophyll cell’s walls. The water then diffuses from air sacs in the leaf, through open stoma.