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a
Peptidoglycan
b
Pseudopeptidoglycan
c
Chitin
d
Lignin
answer is B.
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Detailed Solution
Cell wall of archaebacteria has pseudopeptidoglycan. It has glycans in the form of N-acetyl glucosamine and N-acetyl talosamine uronic acid. It has short peptides consisting of amino acids lysine and glutamine between which peptide bonds are formed. NAG and NAT are linked by β-1, 3 glycosidic bond due to which penicillin and lysozyme can not lyse the cell wall.