In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements in true about archaea?
Correct answer: D. Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
- A. Archaea completely differ from both prokaryotes and eukaryotes.
- B. Archaea completely differ from prokaryotes.
- C. All of these statements are correct.
- D. Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
Explanation
Archaea are a unique group of prokaryotes that share some similarities with eukaryotes, yet they also have distinct features that set them apart. Their cell walls lack peptidoglycan, and they contain unique lipids in their membranes, which allow them to thrive in extreme environments. The presence of introns in their genetic material is another characteristic that is uncommon among prokaryotes but more common in eukaryotes. Therefore, while archaea are a type of prokaryote, they exhibit novel features that are not shared with other prokaryotic organisms or eukaryotic cells.
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About Kingdom Prokaryotae
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
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