Eduprobe
Question:
Which of the following statements is true?
Vessels are unicellular and with narrow lumen
Vessels are multicellular and with wide lumen
Tracheids are multicellular and with narrow lumen
Tracheids are unicellular and with wide lumen
Solution:
Correct option is B. Vessels are multicellular and with wide lumen. Vessels are formed by a series of cells placed longitudinally with their separating walls dissolved. The wall of the vessels are thick due to deposition of lignin. The protoplast is absent at maturity, therefore dead with large lumen. So, the correct answer is 'Vessels are multicellular and with wide lumen'.