PreAP Biology Chapter 28: Protists Microscope Lab Background: At the beginning of the year, you examined creek water and attempted to identify protists as either producers or consumers. Today you will be looking at prepared slides of specific protists and examining them by phylum. Protists can be roughly divided into those that are plant-like, animal-like and fungus-like—meaning that they share some characteristics of plant, animals and fungi—but do not belong in those Kingdoms. Using the information in your textbook and the microscope slides provided, please complete the following: Materials: Microscope Microscope slides Textbook Colored pencils Procedure: 1. Using the slides and specimens provided, examine members of each Protistan phylum. 2. Using your colored pencils, draw the protista. If both microscopic and macroscopic samples are provided, you must draw both. 3. You may examine these in any order—they are not sequential! 5. Please replace the slides in the correct box when you are finished. Part I: Animal-like Protista Zooflagellates: (Choose one of the following from the “Plasmodium/Giardia/Trypanosoma” box, Plasmodium, Trypanosoma, or Giardia--and draw it below) 1. What is the characteristic feature of the Zoomastigina? 2. How to the zooflagellates take food in? 3. What is the normal mode of reproduction in the zooflagellates? Sarcodines: (Get an Amoeba proteus slide from its box, and draw it below.) 4. What is a pseudopod? 5. What are they used for? Ciliates: (Choose Paramecium caudatum from the “Amoeba” box and draw it below.) 6. What two functions do members of Ciliophora use their cilia for? 7. How are a flagellum and a cilium different? 8. How do ciliates defend themselves? 9. What happens during conjugation? Part II: Plant-like Protista Euglenophyta: Choose a Euglena slide from the “Euglena/ Chlamydomonas/Volvox” box and draw a picture below) 10. What is the characteristic feature of the Euglenophyta? 11 How to the Euglenophyta take food in? 12. What is the normal mode of reproduction in the Euglenophyta? Bacillariophyta: (Get a slide of Diatoms from the ““Algae” box and draw a picture of several different diatoms below.) 13. What element do diatoms use to make their cell walls? Rhodophyta: (Get a Corallina slide from the “Algae” box and the preserved sample of Corallina from the front of the room. Observe and draw both below. 11. What are the general characteristics of the red algae? 12. What is a phycobolin? Phaeophyta: (Get a slide of Laminaria from the “Algae” box and draw it below. The get a specimen of Sargassum or Fucus and draw it also.) 13. What is fucoxantin? Chlorophyta: (Get a slide and preserved sample of one of the following: Volvox or Chlamydomonas. Draw it below.) 14. Why do taxonomists think that plants evolved from the green algae? 15. Why can’t they prove it? 16. List below the three kinds of green algae, and describe each. a. b. c. Pyrrophyta: Get a slide of a Dinoflagellate from the “Algae” b0x and draw it below. Questions: 17. With global warming, malaria is a growing concern in the world. Why would global warming affect the distribution of malarial parasites? 18. What protist is responsible for algal blooms?
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