Phloem
They are likewise called bast, and they are tissues in plants that lead sustenances made in the leaves to every single other piece of the plant. Phloem is made out of different specific cells called sieve tubes, companion/buddy cells, phloem filaments, and phloem parenchyma cells. Essential phloem is framed by the apical meristems (zones of new cell generation) of root and shoot tips; it might be either protophloem, the phones of which are developed before extension (amid development) of the range in which it lies, or metaphloem, the cells of which develop after lengthening.