A) Vessels are unicellular and with narrow lumen
B) Vessels are multicellular and with wide lumen
C) Tracheids are unicellular and with wide lumen
D) Tracheids are multicellular and with arrow Lumen
Correct Answer: B
Solution :
Vessels or trachae are made up of a row of cells placed one above the other with their intervening walls absent or variously poured. These have wide lumen for conduction of minerals and water. While tracheids are unicellular and have a narrow lumen.
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