Dear student
Xylem and phloem are the complex tissues
The complex tissues are heterogeneous in nature, because they are made up of more than one type of cells (conductive tissues)
like Phloem composed of (phloem fibres, phloem parenchyma, sieve tubes, companion cell).
Xylem composed of (Xylem vessels, xylem parenchyma, xylem fibres and tracheids).
Regards