Name:______9______
18-3 PLANT LIKE PROTISTS
1. What is a protist?
______
2. Why do we call some protists “plant like”?
______
3. What are the three phyla of plant like protists? Give an example of each.
Euglenophyta: Flagellates with Chloroplasts
Figure 18-18 (label parts of Euglena) / Description of special Featuresa. What are flagella?
b. How many flagellum does a euglena have?
c. How is a euglena able to move in an animal like fashion?
d. What is the red eyespot used for? Why is it important?
e. How can a euglena also live as a heterotroph?
4. What is a pellicle?
5. Briefly describe the structure of a pellicle.
6. How does a euglena reproduce?
Pyrrophyta: Fire Protists
7. What are the characteristics of members of Phylum Pyrrophyta?
8. There are two interesting properties that dinoflagellates have that set them apart from most other protists. What are they and describe how they differ from other organisms.
Interesting property / Description1.
2.
Chrysophyta: Golden Protist
9. Name the three general kinds of organisms found within Phylum Chrysophyta.
10. The cell walls of chrysophytes contain the carbohydrate ______rather than
______, and they generally store food in the form of ______rather than ______.
11. Chrysophyta reproduce: Asexually Sexually Both
12. Do they have flagella? Yes No Sometimes
13. What is a diatom?
The Slime Molds: Unusual Protists
14. Where can you find slime molds?
15. What are the two categories of slime molds?
16. Cellular slime molds belong to the phylum ______. They begin their life cycle as ______cells and spend most of their lives as free-living cells. These cells reproduce ______but when the food supply is exhausted, groups of ameboid cell gather together to produce a large mass of cells that begins to function as a single ______. These solid masses of cells may ______for several centimeters. They then form a reproductive structure called a ______that produces spores by mitosis. These cells then repeat the cycle.
17. Acellular slime molds belong to the phylum ______. Like a cellular slime mold, an acellular slime mold begins its life cycle as an ameba like cell. However, acellular slime molds produce structures called ______that contain thousands of ______enclosed in a ______membrane. Eventually ______spring up from the plasmodium producing ______cells by meiosis. These spores scatter to the ground where they germinate into ______cells. These flagellated cells ______to produce diploid ameboid cells that repeat the cycle.
How the Plantlike Protists Fit into the World
18. Like the animal like protists, plantlike protists are found throughout the world in ______, ______, and ______.
19. What are the two types of relationships plantlike protists can have?
20. What happens when excessive waste is dumped into a body of water? What effect does this have?
21. Why is the red time particularly damaging to the shellfish industry?
22. There are a number of symbiotic relationships between protists and other organisms.
Organisms / Relationship23. What is phytoplankton?
24. More than ______percent of photosynthesis that occurs on Earth goes on near the surface of oceans. The result of this photosynthesis is that the rest of the organisms on our planet are provided with enormous amounts of oxygen and food.