Is xylem living or dead?

The main conducting elements of xylem (tracheids and vessels) are dead at maturity, which leaves hollow tubes ideal for water transport. Xylem parenchyma is living.

Why is phloem transport bidirectional?

Phloem moves sugars from sources (leaves) to sinks (roots, fruits, growing tissues), and these locations change with the season — so flow can be both upward and downward.

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Difference Between Xylem and Phloem

Xylem and phloem are the two conducting (vascular) tissues in plants. One moves water, the other moves food.

In short

Xylem transports water and minerals from roots to leaves through mostly dead cells (one direction, upward); phloem transports food (sugars) throughout the plant through living cells (both directions).

Xylem vs Phloem — Comparison Table

Basis	Xylem	Phloem
Transports	Water and minerals	Food (sucrose)
Direction	Upward (unidirectional)	Both directions
Cell type	Mostly dead at maturity	Living cells
Main elements	Tracheids, vessels	Sieve tubes, companion cells
Process	Transpiration pull	Translocation (pressure flow)

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Frequently Asked Questions — Xylem vs Phloem

Is xylem living or dead?: The main conducting elements of xylem (tracheids and vessels) are dead at maturity, which leaves hollow tubes ideal for water transport. Xylem parenchyma is living.
Why is phloem transport bidirectional?: Phloem moves sugars from sources (leaves) to sinks (roots, fruits, growing tissues), and these locations change with the season — so flow can be both upward and downward.

Difference Between Xylem and Phloem

Xylem vs Phloem — Comparison Table

Frequently Asked Questions — Xylem vs Phloem

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