Question

Give any four differences between tracheids and vessels.

Answer 1

Vascular tissues are special kinds of tissues that function in conduction of various materials along the plant body. Tracheids and vessels conduct water and minerals.

Complete answer:

Tracheids	Vessels
(1) Tracheids are present in the xylem of angiosperms, gymnosperms and ferns.	(1) Vessels are present only in angiosperms.
(2) The cell wall of the tracheid is thin and is signified.	(2) The cell wall of vessels is thick and is signified.
(3) The surface area to volume ratio is high and so it can hold a large amount of water.	(3) The surface area to volume ratio is low and so it can hold a large amount of water.
(4) They have a narrow lumen.	(4) The lumen in vessels is wide.
(5) The end walls in tracheids are tapering.	(5) Vessels have transverse or diagonal cell walls..
(6) There are less number of pits present on tracheids.	(6) There are many small pits present in vessels.

Note: Vascular tissues are of two types: Xylem and phloem. Xylem transports water and minerals along, stem and phloem transports food material.Tracheids and vessels are the essential components of xylem tissue. Xylem is a vascular tissue that helps in the conduction or transportation of water along the stem.