Question

Vessels are multicellular with wide lumen

Answer 1

Vessels are unicellular and with narrow lumen. D) Tracheids are unicellular and with wide lumen. Solution : Vessels on trachea aremulticellular, made up of a row of cells (called vessel elements), placed one above the other, with their intervening walls absent or variously pored.

Answer 2

Vessels are Multicellular

Explanation:

• Vessels or tracheae are multicellular and are comprised of a row of cells put one over the other with their intervening walls absent or differently poured
• These have a wide lumen for conduction of minerals and water  
• Tracheids are unicellular and have a narrow lumen
• These holes take into account the constant progression of water into the xylem vessels
• The dividers of vessels are less thick when contrasted with those of the tracheids