C. Xylem Vessels

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Xylem vessels are dead cells that (1) transport water and dissolved mineral salts from the roots to the leaves, (2) provide structural support for the plant and (3) prevent the xylem vessels from collapsing.

Key Features of the xylem vessels

i. Hollow --> Facilitate the movement of water and dissolved mineral salts due to the lack of obstruction.

ii. Thick walls strengthened by lignin --> Provide structural support for the plant and prevent xylem vessels from collapsing.