Statement A: Archaebacteria can survive in extremes of conditions such as high salinity and high temperature conditions.Statement B: Cell wall composition of archaebacteria is different from eubacteria.

Archaebacteria can survive in extremities of conditions such as high temperature, salinity, pressures, acidic conditions, anaerobic conditions etc. because their cell wall has pseudo-murein and cell membrane has branched lipids and ether bonds exist between lipid molecules.