The structure of phloem tissue SE-CC complex Conce Sieve element (se): conducting cell connected through specialized sieve plates. companion cell(CC): intimately associated with the Se, provide metabolic support for seThe structure of phloem tissue SE—CC complex ➢ Sieve element (SE): conducting cell connected through specialized sieve plates. ➢ companion cell (CC): intimately associated with the SE, provide metabolic support for SE