Question

Compare and contrast the relative safety and efficiency of xylem vessel elements and tracheids.

Answer 1

Xylem vessel - they are cylindrical structures consisting end to end joined cells, water moves upward through pores present in plates with the help of which cells are connected. They help in water conduction and giving mechanical support to the plant. They are more efficient in water conduction in comparison to tracheids as cells here are broad with a wider lumen.

Tracheids - These are narrow cells with tube like structure which are dead and empty with hard and lignified walls which are thick with hollow cavities. There main function is water conduction and to give mechanical support to the plant.