Microorganisms Conclusion What clues can you use to recognize the three main types of microorganisms? You can use your sight to distinguish the three main types of microorganisms, as well as common sense. If you know that fungi is made up of many cells that form long, skinny strands, then you could probably make a very educated guess that fungi microorganisms look like “furry blobs.” If you also knew that a fungus also grows in stalks when they reproduce with enough moisture, and you see mushrooms on a damp day, then you could probably make an educated guess that the mushrooms were fungi. Most mold can grow on agar. They look “furry” when they do because of their long strands, so if you saw a furry-looking microorganism on your agar, then you probably can tell that it is a fungi organism. If the microorganism is very small,