The Bio Brief

Microorganisms can be single-celled or multicellular.

Types Based on Cells

• Single-celled microorganisms
  • Bacteria
  • Some algae
  • Protozoa
• Multicellular microorganisms
  • Many algae
  • Fungi

Microorganisms

      |

      |—— Single-celled

      |      |—— Bacteria

      |      |—— Protozoa

      |      |—— Some algae

      |

      |—— Multicellular

             |—— Fungi

             |—— Many algae

Habitats of Microorganisms:

Microorganisms are found everywhere. They can survive in very extreme conditions.

Places Where Microorganisms Live

Microorganisms live in:

        |

        |—— Ice-cold regions

        |—— Hot springs

        |—— Deserts

        |—— Marshy and wet lands

        |—— Water and soil

        |—— Inside plants and animals

Examples

• In ice-cold climates like polar regions
• In hot springs with very high temperatures
• In deserts with very little water
• In marshy lands and water bodies
• Inside the human body (mouth, intestine, skin)

Microorganisms and Other Living Beings:

• Some microorganisms live freely in air, water, or soil
• Some microorganisms grow on other organisms
• Some live inside the bodies of animals, including humans

Microorganisms

      |

      |—— Free-living

      |—— Live on other organisms

      |—— Live inside animals and humans

Microorganisms are tiny living organisms that can live almost anywhere on Earth—from very cold places to very hot ones, and even inside our bodies. Their ability to survive in different environments makes them very special.