Q5 of 27 Page 21

Give reasons to the following (AS 1)

Xylem is a conductive tissue

Xylem transports materials away from the root Xylem contains elongated tracheid cells, tubular vessels, fibers and parenchyma water to great heights in the plant body. It is up to nearly 200 ft of Eucalyptus plants and up to nearly 330 ft in the red wood trees. The xylem tracheary elements consist of cells known as tracheids and vessel members, both of which are typically narrow, hollow, and elongated. Water moves from tracheid to tracheid which serves to prevent the passage of damaging air bubbles. Vessel members are the principal water-conducting cells in angiosperms. Water flows relatively unimpeded from vessel to vessel through these perforations.


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