Types of Organisms Unicellular Organisms vs Multicellular Organisms

Types of Organisms Unicellular Organisms vs. Multicellular Organisms

Unicellular Organisms

Unicellular Organisms Definition: Unicellular organism – an organism made of only one cell Information: These organisms are very small and need to be seen with a microscope.

Examples of Unicellular Organisms Amoeba Unicellular fungi Bacteria Unicellular yeasts Protozoa Paramecium Unicellular algae

Unicellular Organisms Benefits They can reproduce faster Characteristics Offspring are identical to each other and to parent(s) They are not as complex Do NOT have cell differentiation They tend have shorter lives than multicellular organisms

Images of Unicellular Organisms

Multicellular Organisms

Multicellular Organisms Definition: Multicellular organism – an organism made of two or more cells Information: v These organisms are able to be seen with the naked eye. v These organisms need all parts of themselves to survive. (with few exceptions)

Common Names Many – celled organisms Mammals Birds Reptile Fish

Examples of Multicellular Organisms Humans Birds Cats Flowers Dogs Mold Insects Trees

Images of Multicellular Organisms

Multicellular Organisms Benefits They are able to adapt (have different traits) They DO have cell differentiation Characteristics They consist two or more cells They are able to grow large Tend to be more complex than unicellular organisms

Exit Slip 1) Identify the multicellular organism: a) All algae b) Sunflower c) Amoeba d) Bacteria 2) Analyze which image is an unicellular organism: A B C D