Which kingdoms include organisms that lack a membrane-bound nucleus (i.e., are prokaryotic)?

• A. Plantae and Animalia
• B. Fungi and Plantae
• C. Bacteria and Archaea
• D. Protista and Fungi

Answer: (C)

Verified step by step guidance

1. Understand the definition of prokaryotic organisms: these are organisms that lack a membrane-bound nucleus and other membrane-bound organelles.
2. Recall the major kingdoms of life and their characteristics: Plantae, Animalia, Fungi, Protista, Bacteria, and Archaea.
3. Identify which kingdoms consist of prokaryotic organisms. Bacteria and Archaea are the two domains (sometimes called kingdoms) that include prokaryotes.
4. Recognize that Plantae, Animalia, Fungi, and Protista are mostly eukaryotic, meaning their cells have a membrane-bound nucleus.
5. Conclude that the kingdoms including organisms lacking a membrane-bound nucleus are Bacteria and Archaea.