Botany - Anatomy of Flowering Plants Question with Solution | TestHub

The chief water-conducting element of xylem in gymnosperms are called tracheids. These are elongated cells with tapering ends and are dead because of the deposition of lignin. These show scalariform, annular, reticulate, or bordered pitted thickening. These are the only water-conducting xylem elements in both gymnosperms and pteridophytes. Generally, vessels are absent in gymnosperms with exceptions likeGnetum,Welwitschia,Ephedra, etc.