EVERYDAY SCIENCE

Detailed explanation-1: -Xylem tissue transports water and nutrients from the roots to different parts of the plant, and also plays a role in structural support in the stem.

Detailed explanation-2: -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-3: -Stems carry water and nutrients taken up by the roots to the leaves. Then the food produced by the leaves moves to other parts of the plant. The cells that do this work are called the xylem cells.

Detailed explanation-4: -The cohesion – tension theory of sap ascent explains how how water is pulled up from the roots to the top of the plant. Evaporation from mesophyll cells in the leaves produces a negative water potential gradient that causes water and minerals to move upwards from the roots through the xylem.