Question

Tracheids differ from other tracheary elements in:

• A. lacking nucleus.
• B. being imperforate.
• C. being lignified.
• D. having Casparian strips.

Answer 1

The correct option is B

being imperforate.

The correct option is B.

Explanation of the correct option:

1. Tracheary elements of xylem tissue include tracheids and vessels.
2. The main function that these elements perform is the ascent of sap.
3. Tracheids differ from other tracheary elements in being imperforated.
4. Tracheids possess imperforated cells thus, keeping the sap for a longer duration in them.

Explanation of the incorrect option:

Option A:

Both the tracheary elements do not possess a nucleus.

Option C:

Both the tracheary elements, vessels, and tracheids possess lignified walls.

Option D:

Tracheids and vessels both lack Casparian strips.

Final answer: Tracheids differ from other tracheary elements in being imperforate.