Tracheids:
1. These are xylem elements found in all types of vascular plants.
2. These are single cells with tapering ends, hence are not syncytes.
3. Tracheids are shorter in length.
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Vessels:
1. These are also xylem elements but restricted to angiosperms only .
2. A vessel is formed by several cells arranged end to end and dissolved cross walls, hence is a syncyte.
3. Vessels are much longer than tracheids and are main component for water conduction.