Protista

In General Mostly aquatic life Usually unicellular Reproduction: Eukaryotic Reproduction: Some asexual, some sexual, some both Feeding: Most heterotrophic, some autotrophic Kingdom for life that doesn’t fit in animals, plant or fungi kingdom 3 main categories Animal-like Plant-like Fungi-like Analogy: Kitchen junk drawer

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas 2) Flagellates: move w/ flagella Ex: Trypanosoma causes sleeping sickness Vector: tsetse fly Giardia causes diarrhea Trypanosoma

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas 2) Flagellates: move w/ flagella Ex: Trypanosoma causes sleeping sickness

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas 2) Flagellates: move w/ flagella Ex: Trypanosoma causes sleeping sickness 3) Ciliates: move w/ cilia Ex: Paramecia

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas 2) Flagellates: move w/ flagella Ex: Trypanosoma causes sleeping sickness 3) Ciliates: move w/ cilia Ex: Paramecia Rotifers beat their cilia to create a current to draw water into their “mouths”

Animal-Like Protista AKA: Protozoans Heterotrophic: pathogens, parasites, predators Classified by how they move: 1) Pseudopods : move w/ pseudopodia (false- feet) Engulf by phagocytosis Ex: Amoebas 2) Flagellates: move w/ flagella Ex: Trypanosoma causes sleeping sickness 3) Ciliates: move w/ cilia Ex: Paramecia Amoeba (pseudopod) eating Paramecia (ciliates) The paramecia start to freak out once they start to be digested!

Animal-Like Protista & Disease Plasmodium injected by mosquito bite Malaria Cause: Plasmodium Vector: mosquitoes Effects in humans: Fever, vomiting, coma, death Plasmodium develop inside your liver Plasmodium reproduce inside your RBCs Plasmodium reenters mosquito when bitten

Plant-like Protista AKA: Algae Plant-like: Photosynthetic No roots, no leaves, usually unicellular Classified by their type of cell wall 1) Euglenoids: use flagella to swim Plant-like: photosynthetic Animal-like: swim

Plant-like Protista AKA: Algae Plant-like: Photosynthetic No roots, no leaves, usually unicellular Classified by their type of cell wall 1) Euglenoids: use flagella to swim Plant-like: photosynthetic Animal-like: swim

Plant-like Protista AKA: Algae Plant-like: Photosynthetic No roots, no leaves, usually unicellular Classified by their type of cell wall Euglenoids Plant-like: photosynthetic Animal-like: swim 2) Dinoflagellates Most plankton Basis of aquatic food chains 3) Diatoms Glasslike shells Provide ~ ½ Earth’s O2

Plant-like Protista AKA: Algae Plant-like: Photosynthetic No roots, no leaves, usually unicellular Classified by their type of cell wall Euglenoids Plant-like: photosynthetic Animal-like: swim 2) Dinoflagellates Most plankton Basis of aquatic food chains 3) Diatoms Glasslike shells Provide ~ ½ Earth’s O2

Fungus-like Protista Decomposers: recycle nutrients Mobile at stages of life cycle Spores can develop cilia Slime Molds: large (~1 meter) single celled mass of cytoplasm Fungus & animal-like

Fungus-like Protista Decomposers: recycle nutrients Mobile at stages of life cycle Spores can develop cilia Slime Molds: large (~1 meter) single celled mass of cytoplasm Fungus & animal-like

Fungus-like Protista Decomposers: recycle nutrients Mobile at stages of life cycle Spores can develop cilia Slime Molds: large (~1 meter) single celled mass of cytoplasm Fungus & animal-like Water molds: can be parasitic Potato blight: disease

Fungus-like Protista Decomposers: recycle nutrients Mobile at stages of life cycle Spores can develop cilia Slime Molds: large (~1 meter) single celled mass of cytoplasm Fungus & animal-like Water molds: can be parasitic Potato blight: disease

Protista: The Origins of Multicellular Life Some protista are… 1) Single-celled Live by themselves 2) Colonial Group of independent acting cells No specialized cells 3) Multicellular Cells specialized to be specific jobs Importance: Ancestors of multicellular life This is a colony of cells called Volvox Unicellular Euglena Multicellular Kelp

Kingdom Protista Animal-like Pseudopods Move with false feet Flagellates Move with flagella Ciliates Move with cilia Plant-like Diatoms Glass-like shells Dinoflagellates Plankton Euglenoids Move like animals, autotrophs like plants Fungus-like Slime molds Move like animals, absorb food like fungi Water molds Often parasites Responsible for Irish Potato Famine

ReView 1) Name the three categories of protista. 2) Which category of protista has members that are able to move? 3) Which category of protista has members that absorb nutrients? 4) Which category of protista has members that are heterotrophs? 5) Which category of protista has members that hunt? 6) How does a pseudopod, flagella, and cilia differ? 7) Name the 3 major categories of protozoa. 8) Name the 3 major categories of algae. 9) Name the 2 major categories of fungus-like protista.