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n. The food-conducting tissue of vascular plants, consisting of sieve tubes, fibers, parenchyma, and sclereids. Also called bast.

n. A vascular tissue in land plants primarily responsible for the distribution of sugars and nutrients manufactured in the shoot.

n. That portion of fibrovascular bundles which corresponds to the inner bark; the liber tissue; -- distinguished from xylem.

n. In botany, the bast or liber portion of a vascular bundle, or the region of a vascular bundle or axis with secondary thickening which contains sieve-tubes. Compare xylem.

n. (botany) tissue that conducts synthesized food substances (e.g., from leaves) to parts where needed; consists primarily of sieve tubes

"After a female borer lays its eggs on an ash tree, the larvae burrow through the bark and feed on vascular tissue called the phloem, cutting off the tree's supply of nutrients and starving it to death."

vascular tissue   

xylem   

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