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Classify Protists in 3 Groups Chap. 11 sec. 2

Classify Protists in 3 Groups Chap. 11 sec. 2. Producers - Plant like protists Heterotrophs that can move Heterotrophs that can’t move. Producers. Algae – eukaryotic organisms that carry on photosynthesis but have no roots, stems, or leaves

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Classify Protists in 3 Groups Chap. 11 sec. 2

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  1. Classify Protists in 3 GroupsChap. 11 sec. 2 Producers - Plant like protists Heterotrophs that can move Heterotrophs that can’t move

  2. Producers • Algae – eukaryotic organisms that carry on photosynthesis but have no roots, stems, or leaves • Phytoplankton – single celled free floating producers in water provide food for other organisms • Red Algae – live in tropical oceans contain red pigment to photosynthesize.

  3. Producers cont. • Green Algae – some are singled-celled some are many celled some live in colonies • Volvox live in colonies (drawing) • Ulva sea lettuce (drawing) • Chlamydomans (drawing) • Spirogyra (drawing)

  4. Producers cont. • Brown Algae- seaweeds in cool climates chlorophyll with yellow and brown pigments. Kelp is a food source and habitat for some organisms can grow 60m in one season. • Diatoms – single celled have silica shells (shells made of glass) there are salt and fresh water diatoms. (drawing) • Dinoflagellates – most are single celled have 2 flagella (whip like tail for movement) one species causes red tides.

  5. Producer cont. • Eugenoid – can photosynthesize and be a heterotroph (organism that gets its energy from eating other organisms) use a flagella to move, have an eyespot to sense light, and have a contractile vacuole to hold and remove water from the cell. (drawing)

  6. Heterotrophs with Movement (protozoans) • Classified by the way they move • Amoebas – move by Pseudopods (false feet). They stretch out a pseudopod and then pull themselves to it. They have the ability to change shapes. Live in water and soil, some are human parasites and cause dysentery and internal bleeding. Feed by endocytosis. (Drawing)

  7. Heterotrophsw/movement • Zoo Flagellates wave a flagella to move • Giardialamblia parasite that lives in the digestive tract of bertebrates • One species lives in a termite’s stomach and digests the cell wall of wood. This is called mutualism where both organisms benefit.

  8. Heterotrophsw/movement • Ciliates – Tiny hairs cover the cell membrane and beat back and forth for movement. • Paramecium have 2 nuclei, one is to pass genetic material during sexual reproduction (micronucleus) the other nucleus controls the activities of the cell (macronucleus). They also have an oral grove for eating. (drawing)

  9. Heterotrophs without movement Spore forming protists that have no cilia or flagella for movement many are parasites with complicated life cycles that have 2 hosts. Plasmodium vivax – Causes malaria in humans and is transported by the mosquitoes, millions of people in tropical regions die from malaria because they don’t have the proper drugs for treatment. (drawing)

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