<P> Xylem is one of the two types of transport tissue in vascular plants, phloem being the other . The basic function of xylem is to transport water from roots to shoots and leaves, but it also transports nutrients . The word "xylem" is derived from the Greek word ξύλον (xylon), meaning "wood"; the best - known xylem tissue is wood, though it is found throughout the plant . The term was introduced by Carl Nägeli in 1858 . </P> <P> The most distinctive xylem cells are the long tracheary elements that transport water . Tracheids and vessel elements are distinguished by their shape; vessel elements are shorter, and are connected together into long tubes that are called vessels . </P> <P> Xylem also contains two other cell types: parenchyma and fibers . </P> <P> Xylem can be found: </P>

What are the constituent of xylem and phloem