Most archaea (but not Thermoplasma and Ferroplasma) possess a cell wall. ... Unlike bacteria, archaea lack peptidoglycan in their cell walls.

Is cell wall present in archaebacteria?

Some archaea lack a cell wall altogether. ... While archaea lack peptidoglycan, a few contain a substance with a similar chemical structure, known as pseudomurein.

How many cell walls does archaebacteria have?

There are four different types of archaean cell walls. One type is composed of pseudopeptidoglycan, which is similar to peptidoglycan in morphology but contains different sugars in the polysaccharide chain. The other three types of cell walls are composed of polysaccharides, glycoproteins, or pure protein.