Question

differentiate between tracheids and vessels

Answer 1

Tracheids are the elongated cells of the xylem. They also lack protoplasm like the vessels. ... Tracheids are present in all vascular plants whereas vessels are confined to angiosperms. Tracheids are thin whereas vessel elements are wide.

Answer 2

Difference between Tracheids and Vessels

Tracheids

1. Main conducting elements of pteridophytes and gymnosperms

2. Tracheids originate from single cells

3.  Tracheids have a comparatively narrow diameter

4. They have large pits which are less in number

5. They are imperforated cells

6. They are less efficient in water conduction due to the absence of perforations

7. Walls are more thickened with narrow lumen

8. Average length upto 1 m. m (rarely 12 cms.)

Vessels

1.  Main conducting elements of angiosperms

2.  Vessel members, which are joined into long continuous tubes, originate from longitudinal file of cells

3. Vessels have a comparatively wide diameter

4. They have small pits which are larger in number

5.They are perforated cells

6. They are more efficient in water conduction due to the presence of perforations

7. Walls are less thickened with large lumen

8. Average length upto 10 cms or more( Rarely 2-6 metres)