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KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms.

KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms. Protists are eukaryotes that are not animals, plants, or fungi. Protists can be animal-like, plantlike, or funguslike. Animal-like protists consume other organisms. aka: protozoans. heterotrophs single-celled

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KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms.

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  1. KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms.

  2. Protists are eukaryotes that are not animals, plants, or fungi. Protists can be animal-like, plantlike, or funguslike.

  3. Animal-like protists consume other organisms. aka: protozoans • heterotrophs • single-celled • Some examples include: • Pseudopods, flagellates, cilliates

  4. Animal-Like Protista & Disease • Malaria: Infected mosquito bites • Fever, vomiting, coma, death • Sleeping sickness: bite of tsetse flies • Coma & death

  5. Plantlike protists are photosynthetic. Aka: Algae • no roots, stems, or leaves • Perform photosynthesis with chloroplasts • (seaweed, kelp) • Example: Diatoms • Glasslike shells • Provide ~ ½ O2 on Earth

  6. Live in 3 arrangements 1) Single-celled 2) Multicellular colonies; independent acting cells Over time, cells became somewhat specialized 3) Multicellular colonies; specialized cells Over time, cells dependent on others because of specialization Beginning of multicellular life??? Origins of Multicellularity

  7. Funguslike protists decompose dead organisms. • heterotrophs • can move, whereas fungi cannot (spores develop cilia) • Some examples include: • Slime molds: very large (~1m) single celled mass of cytoplasm. • Water molds: can be parasitic, like the Potato Blight (disease that caused the potato famine in Ireland)

  8. Protists are difficult to classify. • Protista is one kingdom in the domain Eukarya. • Protist classification will likely change. • Some protists are not closely related. • Molecular evidence supports reclassification.

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