Question

A tracheid differs from a vessel in having

• A. Scalariform thickenings
• B. Discontinuous lumina, which are separated by end wall
• C. Lack of bordered pits
• D. Thick walls without contents

Answer 1

The correct option is B Discontinuous lumina, which are separated by end wall

Vessels are limited in their growth and are joined end to end to form continuous tubular structures with perforations in their cross walls. Tracheids are elongated and non-perforated. They have only pit pairs at the regions of union with other tracheids

So, the correct answer is 'Discontinuous lumina, which are separated by end wall'