2002 AIPMT Anatomy of Flowering PlantsXylem: Tracheids and Vessels Easy Question 84 of 86 in Anatomy of Flowering Plants

Which of the following statement is true : -

A Vessels are multicellular and with wide lumen
B Tracheids are multicellular and with narrow lumen
C Vessels are unicellular and with narrow lumen
D Tracheids are unicellular and with wide lumen

The answer is A.

Solution

A vessel is a long tube formed by many cells (vessel members) joined end to end, with their end walls dissolved (perforated). So vessels are multicellular and have a wide lumen.
A tracheid is a single elongated cell with tapering ends and lignified walls. So tracheids are unicellular and have a narrow lumen.
So the true statement is: vessels are multicellular and with wide lumen.

Concept Structure of vessels and tracheids

Anatomy of Flowering Plants in past papers

86 questions from this chapter have appeared across 26 exam years.