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B
1879
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C
1979
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D
1977
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Solution
The correct option is D 1977
Archaea is a separate domain which includes halophiles, methanogens and thermophiles. Archaea was discovered in the year 1977.This organism is a prokaryote and does not have a well developed cellular structure. The cell wall structure does not contain peptidoglycan, murein, lipid, etc. These organisms have certain novel features when compared to the other organisms.