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Question

According to the Three Domain System of Biological Classification, which was proposed by Carl Woese et. al., the three domains are:

A
Archaea, Prokaryote and Eukarya
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B
Archaea, Bacteria and Eukarya
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C
Archaea, Bacteria and Fungi
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D
Archaea, Fungi and Eukarya
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Solution

The correct option is B Archaea, Bacteria and Eukarya

The three-domain system is a biological classification introduced by Carl Woese et al. in 1990. It divides cellular life forms into three domains, which are domain Archaea, domain Bacteria and domain Eukarya. The prokaryotes were divided into two groups: Archaea and Bacteria.

The domain Archaea contains organisms that included early prokaryotes that live in extreme environments called archaebacteria. It includes the kingdom Archaebacteria.

The domain Bacteria contained typical prokaryotes that lack membrane-bound cell organelles. It includes the kingdom Eubacteria.

The domain Eukarya contains eukaryotic organisms. It includes the kingdoms Protista, Fungi, Plantae and Animalia.


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