DIFFERENCE BETWEEN TRACHEIDS AND VESSELS

                       TRACHEIDS                                                                  VESSELS

1. It is present in all vascular plants   - They are found mainly in angiosperms. 
2. They are comparatively short          -     They are usually long. May reach upto 2- 6 m.
3. Each cell of tracheid is elongated with tapering ends.- Cells of vessel are placed one above the  other
4. The end walls remain intact    -     End walls are either absent or possess perforations.
5. Cell cavities of tracheid are not much wide.      -  cell cavities or lumen are much wider.

 

TRACHEIDS VS  FIBRES

1. TRACHEIDS ARE NOT MUCH ELONGATED AS COMPARED TO FIBRES.
2.  THE CELL WALLS ARE NOT AS MUCH THICK AS COMPARED TO FIBRES
3. LUMEN OF TRACHEID IS WIDE
4. TRACHEIDS SERVE TO CONDUCT WATER AS WELL AS PROVIDE MECHANICAL SUPPORT.

 

FIBRES:

1. FIBRES ARE ELONGATED
2. FIBRES HAVE EXCESSIVELY THICK WALLS
3. LUMEN OF FIBRES IS NARROW
4. FIBRES ONLY PROVIDE MECHANICAL SUPPORT.

        MERISTEMATIC                                                                       PERMANENT TISSUES

1. CELLS ARE SMALL AND ISODIAMETRIC    -                              VARIABLE IN SIZE
2. INTERCELLULAR SPACES ARE USUALLY ABSENT -               SPACES PRESENT
3. VACUOLES ARE ABSENT   -                                       VACUOLES     ARE     PRESENT
4. CELL WALLS ARE THIN       -                                             MAY BE THIN OR THICK
5. CELLS CAN DIVIDE AGAIN AND AGAIN    -                    DO NOT DIVIDE
6. CELLS ARE UNDIFFERENTIATED          -                     FULLY DIFFERENTIATED
7. ITS A SIMPLE TISSUE.        -                         MAY BE SIMPLE OR COMPLEX