Question

Name the dead components of xylem which form wood and does not participate in transport

Answer 1

Technically, wood is secondary xylem formed by vascular cambium during secondary growth.
Xylem cells are like zombies in that they are dead when functional.
The accumulation of wood, results from the continued divisions by the ring of vascular cambium cells just inside the bark. All tissues outside cambium layer including phloem and cork cells is the bark.