How many types of elements together make up the xylem tissue? Name them.

Four types of elements together make up the xylem tissue. They are:

1. Tracheids — They are thick walled and tubular dead cells. They transport water and mineral.
2. Vessels — They are tubular cells and transport water and mineral.
3. Xylem parenchyma — They store food.
4. Xylem fibres — They are supportive in function.