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Phloem
Plant tissue containing sieve tube elements and companion cells, translocating sucrose and amino acids from the leaves to the rest of the plant
What is phloem made out of?
made of various cell types
What is bulk?
sieve tubes elements which are the main conducting cells and companion cells
What are other cell types of phloem tissue
Parenchyma
What does parenchyma do?
storage and strengthening fibres
What does mature phloem contain
living cells
Sieve tubes
lose their nucleus and organelles to create space for efficient transport of sugars and other organic compounds
Companion cells
connect to sieve tubes by plasmodesmata
very biochemically active