Final answer:
Answer A is correct as fungi, protozoans, and helminths are composed of eukaryotic cells while bacteria and archaea are composed of prokaryotic cells. These classifications are important for understanding cellular structure and evolution.
Step-by-step explanation:
Fungi, protozoans, and helminths are all composed of eukaryotic cells, whereas bacteria and archaea are composed of prokaryotic cells. Therefore, the correct answer is A. Eukaryotic; Prokaryotic. Prokaryotic cells are characterized by lacking a true nucleus and membrane-bound organelles, and this group includes the single-celled organisms of the domains Bacteria and Archaea. On the other hand, eukaryotic cells have a true nucleus and membrane-bound organelles, which include the cells of animals, plants, fungi, and protists.
To further clarify the cell types, the question option D. bacteria and archaea consist of prokaryotic cells, confirming that these two domains do not have eukaryotic cells. Understanding these classifications is crucial in studying the evolution and characteristics of different life forms.