A) All are halophilic
B) All are photosynthetic
C) All are fossils
D) These are oldest living beings
Correct Answer: D
Solution :
[d] The archaebacteria are able to flourish in extreme conditions of environment that are believed to have existed on the primitive earth. It is believed that these represent the early forms of life. Hence, archaebacteria are called "oldest living fossils".
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