. Which of the following is an acellular organism

Best Answer

Explanation-

1. Bacteria belong to Kingdom Monera, they are prokaryotic cells lacking a true nucleus, and are typically unicellular (one group is mycelial).
2. Fungi- They are the members of Kingdom Fungi, they have a thallus structure with a colorless filamentous structure called hyphae. Hyphae with branches and sub-branches form a complex network called mycelium.
3. Protozoa- They are unicellular-eukaryotic organisms having a true nucleus.
4. Virus- They are acellular organism that lies in the gray area between living and non-living. They behave like mere particles when in no contact with living cells. 

Final Answer-

So, The correct option is D. 

Virus is an acellular organism.