Question

How are tracheids different from other tracheary elements?

Answer 1

Tracheary elements consist of both tracheids and vessels. Their main function is to conduct the sap, water and minerals.As it conducts water, its cells should be dead otherwise water will pass through the membranes.

Complete answer:
Tracheids are different from other tracheary elements because they are imperforate. These cells have pits that support upward and lateral conduction of water. They are short and single celled, on the other hand vessels are composed of many cells and almost 10 cm long. Tracheids have hard lignified walls and the lumen is wide. Vessels are more suitable for conduction of sap because of the presence of perforation. Both tracheary elements contain casparian stripes which are made up of cell wall material, lignin and suberin. Water conduction is generally unidirectional in nature.

Additional information:-
Tracheids are the part of xylem tissue.
Xylem is a very important transport tissue in most vascular plants. Its basic function is to transport water and nutrients from roots to other parts, but it also transports. It consists of: parenchyma, fibres, tracheids and vessels.It can be found in non woody parts(in vascular bundles).
Primary xylem is found in primary growth and is formed from procambium( protoxylem and metaxylem). Metaxylem is the one which develops after the protoxylem. Metaxylem contains wide vessels and tracheids when compared to protoxylem.
Secondary xylem is a result of secondary growth and is formed from vascular cambium.

Note:
Plants contain two types of tissues for transportation, they are- xylem and phloem. Xylem is mainly for transporting water and minerals while phloem is for transporting sugar and other photosynthates.