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Archaebacteria differ from eubacteria in

  • cell membrane structure

  • mode of nutrition

  • cell shape

  • mode of reproduction

Answer

A.

cell membrane structure

Archeabacteria different from eubacteria in that eubacteria has two cell membrane composed mainly of glycerol - ester lipids, while archaebacteria have a membrane made up of glycerol - ether lipid. Ether lipids are chemically more resistant then ester lipids. This stability help archaebacteria survive at high temperature and in very acidic or alkaline environment. 

Archeabacteria different from eubacteria in that eubacteria has two cell membrane composed mainly of glycerol - ester lipids, while archaebacteria have a membrane made up of glycerol - ether lipid. Ether lipids are chemically more resistant then ester lipids. This stability help archaebacteria survive at high temperature and in very acidic or alkaline environment.