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Chapter 11

Unicellular Eukaryotes. Chapter 11. A. They are the most primitive eukaryotes B . They are the most diverse kingdom C . Were considered plants before 1969 D . Can be unicellular or not (colonies) E . There are two groups 1. Protozoa 2. Algae. I. Protists.

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Chapter 11

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  1. Unicellular Eukaryotes Chapter 11

  2. A. They are the most primitive eukaryotes B. They are the most diverse kingdom C. Were considered plants before 1969 D. Can be unicellular or not (colonies) E. There are two groups 1. Protozoa 2. Algae I. Protists

  3. A. Animal-like protists B. All are heterotrophic C. Free living protozoans live where there is water and in soil D. Parasiticprotozoans live in the bloodstream and tissues of their hosts E. Most lack an outer coating II. Protozoa

  4. F. Different phyla 1. Sarcodina-The squishy movers a. Amoebas b. Live in freshwater c. Use cytoplasmic streaming to move d. Has two regions: Ectoplasm and Endoplasm e. Move by pseudopodia (false feet)extensions of endoplasm that allow them to ooze along f. Absorb nutrition by diffusion or get it by phagocytosis

  5. 2. Ciliophora-Stroke, stroke, stroke a. Paramecium b. Use cilia that line the outer cell wall and move in synchronized strokes c. Found in freshwater and marine environments d. Have two nuclei: the macronucleus (asexual reproduction, digestion, respiration, protein synthesis) and the micronucleus (heredity, sexual reproduction)

  6. e. Have oral grooves for feeding and an anal pore for waste f. Reproduce asexually using binary fission or sexually using conjugation

  7. 3. Zoomastigina-Whip, whip, whip a. Use flagella to pull, push and propel themselves b. Many live in ponds or lakes c. Some are parasitic and cause disease

  8. 4. Sporozoa-The Do-Nothings a. Have no means of locomotion b. All are parasites c. Travel in the blood or bodily fluids of the host d. Absorb nutrition from their host

  9. A. Plant-like protists B. Most are aquatic C. Most are classified by color D. Photosynthetic III. Algae

  10. E. Different phyla 1. Chlorophyta: The Green Algae 2. Phaeophyta: The Brown Algae 3. Rhodophyta: The Red Algae 4. Chrysophyta: The Golden Brown Algae 5. Pyrrophyta: The Fire Algae

  11. 6. Euglena: The Misfit Algae-Protozoa a. Contain chlorophyll b. In the dark it becomes heterotrophic c. Abundant in freshwater lakes or ponds d. Have contractile vacuoles and eyespots

  12. A. Were classified as fungi for years. B. Live on land or freshwater C. Heterotrophic IV. Slime/Plasmodium

  13. D. Two kinds 1. Plasmodial Slime Mold a. single mass of cytoplasm undivided by membranes b. Extends pseudopodia to eat bacteria c. forms reproductive structures called sporangiawhen food is scarce

  14. 2. Cellular Slime Mold a. Have unicellular and multicellularlife cycles 1. Solitary haploid cells that reproduce asexually 2. Colony forms when food is scarce, looks like a slug 3. Spores form, asexual reproduction

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