from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The supporting and water-conducting tissue of vascular plants, consisting primarily of tracheids and vessels; woody tissue.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A vascular tissue in land plants primarily responsible for the distribution of water and minerals taken up by the roots; also the primary component of wood.
from the GNU version of the Collaborative International Dictionary of English
- n. That portion of a fibrovascular bundle which has developed, or will develop, into wood cells; -- distinguished from phloëm.
from The Century Dictionary and Cyclopedia
- n. In botany, that part of a fibrovascular bundle which contains ducts or tracheids—that is, the woody part, as distinguished from the phloëm, or bast part. Compare phloëm. See protoxylem, leptoxylem.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels
On the other hand, leafhoppers and planthoppers, that feed at least half the time on the deeper layer of conductive tissues (called the xylem), get knocked down.
The xylem is the part of the vascular system that carries water and nutrients from the roots to the leaves.
In dicot roots the xylem is the tissue at the core (Figure 5.3).
In the xylem are a number of vessels (_C_, _tr. _) at once distinguishable from the other cells by their definite form, firm walls, and empty cavity.
As more water vapor molecules exit the plant, the remaining water molecules tug on each other and will pull an entire column of water throughout the plant body through special tissues called xylem during the process of transpiration.
In nature, trees use water in tubular tissues, called xylem, like ropes that pull more water out of the ground, delivering it to leaves.
This tissue is comprised of two types of specialized cells called xylem and phloem.
(AL-jee) Primitive organisms that contain chlorophyll but do not have structures, such as xylem and phloem, to transport fluids.
The title of the exhibition, "xylem," refers to the water-conducting tissue of vascular or woody plants.
WHAT: Patrick Renner's exhibit, "xylem," and Jonathan Leach's "Beauty and the Byproduct"