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Kingdom protista

Kingdom protista. Kingdom Protista. Scientists believe Protists paved the way for the evolution of plants, animals, and fungi. Can be unicellular, multicellular, or colonial. Characteristics. Large and complex cells that contain nuclei and other organelles Eukaryotes Unicellular

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Kingdom protista

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  1. Kingdom protista

  2. Kingdom Protista • Scientists believe Protists paved the way for the evolution of plants, animals, and fungi. • Can be unicellular, multicellular, or colonial

  3. Characteristics • Large and complex cells that contain nuclei and other organelles • Eukaryotes • Unicellular • Plant-like producers • Autotrophs • Animal-like consumers • Heterotrophs • Have a cell wall • Protozoans (animal-like) and Algae (plant-like)

  4. Algae • Plant-like mircroorganisms • Make their own food • Produce oxygen through photosynthesis • More than 75% of oxygen on Earth is produced by photosynthetic algae • Most live in either salt or fresh water, but some live on moist shady tree bark, wet concrete and rocks, or with a fungus as part of a lichen.

  5. Green Algae • Grows in large masses • Create food photosynthesis • Example: Volvox is a colonial green algae

  6. Diatoms • Look like flying saucers • Brittle shell-like wall • Move by floating in currents, or attach themselves to larger floating surfaces. • When they die they fall to the bottom of the sea floor • A build up of these dead diatoms is called diatomite which is used to make pool filters and tooth paste

  7. Protozoans • Protozoan means “first life” • Because they must find their food they must be able to move about. • Some have no means of locomotion so they often get transported as a parasite and cause diseases. • Responsible for malaria • Example protozoans: • Amoeba • Paramecium

  8. Amoeba • A protozoan that uses a flowing motion to move and pursue its prey. • Have pseudopodia which means “false-foot”

  9. Paramecium • Protozoans with hair-like cilia that work like tiny oars.

  10. Euglena • A unique type of algae because it has characteristics of both protozoans and green algae. • Autotrophic like algae • Can also be hetertrophic when light is low which is a characteristic of protozoans. • Mobile Uses a whip-like flagella to move around and get light/food.

  11. Slime Molds • Once considered fungi • Re-classified because they can move • Made of individual cells • Look like big blobs • Get food by creeping along and gathering food particles as they move • If you cut them into pieces, they will move themselves back together.

  12. Water Molds • Live in wet areas • Example: mildew

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