AP BIOLOGY

Detailed explanation-1: -Xylem is the specialised tissue of vascular plants that transports water and nutrients from the plant–soil interface to stems and leaves, and provides mechanical support and storage. The water-conducting function of xylem is one of the major distinguishing features of vascular plants.

Detailed explanation-2: -The xylem distributes water and dissolved minerals upward through the plant, from the roots to the leaves. The phloem carries food downward from the leaves to the roots. Xylem cells constitute the major part of a mature woody stem or root.

Detailed explanation-3: -<br> Reason :-Xylem and phloem tissues are meant for conduction of water and food respectively.

Detailed explanation-4: -Tracheids: They are tubular cells that are found in the xylem of vascular plants and are responsible for transporting water from the roots to the leaves.

Detailed explanation-5: -The principal conductive cells of the xylem are tracheary elements, of which there are two types, tracheids and wood vessels. Both are elongated cells with secondary cell walls that lack protoplasts at maturity.