PROTISTS The “Little Guys”

A DIVERSE KINGDOM

BUT… There are some general characteristics they all share: Unicellular (made of one cell) and Multicellular (more than one cell) Eukaryotes (have a nucleus) Live in moist environments

Animal-like Protozoans Protists Animal-like Protozoans Plant-like Algae Fungus-like Heterotrophs Have cell walls Heterotrophs Classified by how they move Autotrophs Have cell walls Sarcodines (Amoeba) Ciliates (Paramecium) Flagellates (Giardia) Parasites (Malaria)

Animal Like Protists are called Protozoans Animal Like Protists are called Protozoans. They are unicellular and are classified into four groups based on the way they move and live. 1. Sarcodines (have pseudopods) 2. Ciliates (have cilia) 3. Flagellates (have flagella) 4. Protozoans that are Parasites

PROTOZOANS- Animal like Protists 1. Sarcodines Move using PSEUDOPODS (“false feet”), bulges of the cell membrane Example: AMOEBA Pseudopod

Sarcodine Animations/Videos

PROTOZOANS- Animal like protists 2. Ciliates Move using CILIA, tiny hair-like projections that move in a wavelike motion, acting like oars Example: PARAMECIUM Cilia

Ciliate Animations/Videos

PROTOZOANS- Animal like Protists 3. Flagellates Move using FLAGELLA, a long, whip-like structure Example: Giardia Symbiosis- a close relationship in which at least one of the species benefits Ex: Flagellates that live in the intestines of termintes Mutualism- A type of symbiosis in which both partners benefit from living together

PROTOZOANS- Animal Like Protists 4. Parasites- characterized more by the way they live than how they move Parasites that feed on the cells and fluids of their host Example: PLASMODIUM (causes malaria) Transmitted by mosquitoes

Plantlike Protists- Algae 1. Diatoms 2. Dinoflagellates 3. Euglenoids 4. Green Algae 5. Brown Algae 6. Red Algae

Diatoms- unicellular Glasslike cell walls Diatomaceous Earth

Dinoflagellates- colorful, unicellular algae Surrounded by plates of armor and two flagella -They look like spinning tops when they move!

Euglenoids- green, unicellular algae found in fresh water They can be autotrophs and heterotrophs! Check out the Euglena’s eyespot!

Red Algae- multicellular seaweeds Green Algae- multicellular and unicellular Brown Algae- have many plant like structures

FUNGUS-LIKE- heterotrophs that have. cell walls and (most) use FUNGUS-LIKE- heterotrophs that have cell walls and (most) use spores to reproduce Slime Molds Downy Mildews Water Molds