Question

According to three domain classification proposed by Carl Woese, prokaryotes are included in how many domains?

• A. One
• B. Two
• C. Three
• D. None

Answer 1

The correct option is B Two

Carl Woese proposed the three domain or six kingdom classification. Domain is considered to be the highest taxonomic category and includes kingdoms.
The three domains are archaea, bacteria and eukarya.
Domain Archaea and Bacteria include organisms that are single celled and prokaryotic. Prokaryotic cells lack a well defined nucleus and membrane bound cell organelles.
Domain eukarya includes organisms that are eukaryotic and eukaryotic cells have well defined nuclei bounded by nuclear envelope and membrane bound cell organelles.
Hence, prokaryotes are included in two domains, Archaea and Bacteria.