What is the role of xylem tissue

What is the role of xylem tissue? 

Answer: Xylem tissues are specialized for the conduction of water and mineral substances in the plant body. 

1. Tracheids and vessels forms tubular structures to transport water and minerals vertically (unidrectional). 

2. Xylem parenchyma stores food and helps in the sideways conduction of water. 

3. Fibres are mainly supportive in function.