sieve tube

American  

noun

Botany.

1. a vertical series of sieve cells in the phloem, specialized for the conduction of food materials.

2. a single sieve cell.

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sieve tube British  

noun

1. botany an element of phloem tissue consisting of a longitudinal row of thin-walled elongated cells with perforations in their connecting walls through which food materials pass

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Etymology

Origin of sieve tube

First recorded in 1870–75

Example Sentences

Phloem sap travels through perforations called sieve tube plates.

From Textbooks • Jun. 9, 2022

J, sieve tube from the underground stem, × 300.

From Elements of Structural and Systematic Botany For High Schools and Elementary College Courses by Campbell, Douglas Houghton