Bacterla are prokaryotic organism. They are plants because cell wall is present in cell of bacterla. Cell wall of bacteria, is made up of peptidoglycan, murein or mucopeptide. It has acetyl glucosamine and acetyl muramic acid with small peptide chains.
Cell membrane of plant and animal cells are made up of protein and lipid.
Cell wall of fungus is made up of polysaccharide chitin and of plants is of cellulose.