Definition of sieve tube
: a tube consisting of an end-to-end series of thin-walled living plant cells characteristic of the phloem and held to function chiefly in translocation of organic solutes
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“Sieve tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sieve%20tube. Accessed 5 Jul. 2022.
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Time Traveler for sieve tube
The first known use of sieve tube was in 1875
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