What term describes a small living organism that can only be seen with a microscope?

What term describes a small living organism that can only be seen with a microscope?

• A. Microorganism
• B. Bacteria
• C. Virus
• D. Fungus

Answer: (A)

A microorganism is a living thing so small that you can only see it with a microscope. This broad term covers tiny life forms like bacteria and fungi, which is why it fits the description. While viruses are extremely small and some definitions treat them as not living outside a host, they are still studied as microscopic life forms inside microbiology. So the general label for something you can’t see without magnification is microorganism, making it the best answer.

A microorganism is a living thing so small that you can only see it with a microscope. This broad term covers tiny life forms like bacteria and fungi, which is why it fits the description. While viruses are extremely small and some definitions treat them as not living outside a host, they are still studied as microscopic life forms inside microbiology. So the general label for something you can’t see without magnification is microorganism, making it the best answer.