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Sieve Tube Elements Cells Companion Describe Structure Phloem

Phloem consists of long hollow tubes of living cells, including sieve tube elements with sieve plates and companion cells that support sieve tube element function.

El floema consiste en tubos huecos largos de células vivas, incluyendo elementos de tubo criboso con placas cribosas y células acompañantes que apoyan la función de las células cribosas.

Front Describe the structure of phloem.
Back Phloem structure:
  • Long hollow tubes made of living cells
  • Consist of sieve tube elements and companion cells
  • Sieve tube elements form tube to transport assimilates
  • Sieve plates found in between sieve tube elements
  • Companion cells are linked to sieve tube elements by plasmodesmata, fulfill metabolic needs ot sieve tube elements as they have lost normal cell functions and have no nucleus

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