Question

The vessel elements of angiosperms differ from other elements of xylem in having

• A. Simple pits on their radial walls
• B. Bordered pits on their lateral walls
• C. Simple and bordered pits on their end walls
• D. Simple perforation on their end walls

Answer 1

Answer: (D)

Simple perforation on their end walls

Vessels are joined end to end to form continuous tubular structures with perforations in their cross walls. Water and minerals are efficiently conducted through these perforations. Vessels are present in most of the angiosperms. Tracheids are elongated and non-perforated. They have only pit pairs, at the regions of union with other tracheids.
Therefore, the correct answer is option D.