Answer:
Most archaebacteria is autotrophic but some heterotroph organisms are also present.
Explanation: Autotrophic organisms are those which make their own food while heterotroph cannot. Archaebacteria are unicellular and prokaryotic organisms which belongs to the kingdom monera. Unicellular organisms are those which is made of single. Single cell perform all body functions such as respiration, digestion and reproduction etc. Prokaryotic means lack of nuclear membrane around the nucleus and absence of mitochondria, ribosome, lysosomes and endoplasmic reticulum.
