NEET 2008 Biology question

In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements is true about archaea?

(1)Archaea completely differ from prokaryotes
(2)Archaea resemble eukarya in all respects
(3)Archaea have some novel features that are absent in other prokaryotes and eukaryotesCorrect
(4)Archaea completely differ from both prokaryotes and eukaryotes

Answer: (3)

Solution

In the three-domain system archaea are prokaryotes that share some features with bacteria and some with eukaryotes, and in addition have novel features of their own (e.g. ether-linked branched membrane lipids, distinctive cell-wall composition without peptidoglycan, unique

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Question ID VK-090049