Chapter 22
Student: _________________________________________________________
1. Which disease is mismatched with the incorrect causative agent?
A. fish kills – dinoflagellate
B. fish ick – a ciliate
C. malaria – a pseudopodian
D. African sleeping sickness – a trypanosome
2. _________ is a protistan that can be autotrophic or heterotrophic.
A. Euglena
B. Plasmodium
C. Amoeba
D. Giardia
3. Which protistan structure is not correctly matched with its function?
A. pseudopodia – movement and feeding
B. cyst – a reproductive structure
C. trichocyst – defense and capture of prey
D. pyrenoid – synthesis of starch
4. The kingdom Protista includes all of the following kinds of organisms EXCEPT
A. protozoa.
B. algae.
C. water molds.
D. yeasts.
E. slime molds.
5. Which is NOT part of the correct description of a protozoan?
A. heterotrophic
B. multicellular
C. usually motile
D. eukaryotic
6. The term "plankton" is based on the Greek root word meaning
A. very small.
B. algae.
C. aquatic.
D. wandering.
E. plate-like.
7. A simplified list of characteristics of ‘‘algae'' includes the following:
phylum Chlorophyta: mostly freshwater, cell wall, chlorophylls a and b
phylum Euglenophyta: mostly freshwater, no cell wall, chlorophylls a and b
phylum Phaeophyta: mostly marine, cell wall, chlorophylls a and c
phylum Chrysophyta: marine and freshwater, cell wall, chlorophylls a and c
phylum Pyrrhophyta: mostly marine, cell wall, chlorophylls a and c
phylum Rhodophyta: mostly marine, chlorophylls a and phycobilin
From examination of this restricted set of data, and referring back to discussions of systematics and taxonomy,
it is most likely that the most primitive algae
A. were marine.
B. were freshwater.
C. contained cell walls.
D. contained chlorophyll a.
E. contained chlorophyll c.
8. The various forms of algae are NOT considered plants because they
A. are not multicellular.
B. lack strengthened cell walls.
C. never have specialized tissues.
D. lack plant structures such as roots.
E. All of the choices are differences that separate the algae from plants.
9. Which protist is NOT correctly linked to the type of movement it shows?
A. amoeboids–pseudopodia
B. ciliates–cilia
C. zooflagellates–flagella
D. sporozoa–flexing the pellicle
10. Protist reproduction
A. is always asexual fission.
B. is always sexual with the adult haploid.
C. is always sexual with the adult diploid.
D. is always sexual with alternation of haploid and diploid generations.
E. may be asexual or any of these sexual cycles.
11. A member of the green algae is
A. Amoeba proteus.
B. Plasmodium vivax.
C. Chlamydomonas.
D. Penicillium.
E. Paramecium.
12. Which belongs to the algae?
A. sporozoa
B. zooflagellates
C. slime molds
D. diatoms
E. ciliates
13. The term "filament" is based on the Latin root word meaning
A. thread.
B. propeller.
C. gamete.
D. sperm.
E. chain.
14. The term "conjugation" is based on the Latin root word meaning
A. mathematical.
B. grammar relating to verbs.
C. pertaining to marriage.
D. sperm.
E. egg.
15. The main function of the pyrenoid is
A. chlorophyll production.
B. synthesis of carbohydrate.
C. eliminating excess water.
D. to be a photoreceptor to detect light.
E. resistance for survival during winter and times of drought.
16. An example of a colonial green alga is
A. Ulva.
B. Chlamydomonas.
C. Volvox.
D. Spirogyra.
E. Fucus.
17. An example of a filamentous green alga is
A. Ulva.
B. Chlamydomonas.
C. Volvox.
D. Spirogyra.
E. Fucus.
18. A unicellular alga that has both plantlike photosynthesis and animal-like motility is a
A. diatom.
B. dinoflagellate.
C. euglenoid.
D. zooflagellate.
E. red alga.
19. The kind of algae that help to build a coral reef are
A. diatoms.
B. dinoflagellates.
C. red algae.
D. brown algae.
E. multicellular green algae.
20. "Red tides'' are produced by massive blooms of
A. diatoms.
B. dinoflagellates.
C. red algae.
D. brown algae.
E. multicellular green algae.
21. A member of the ciliate group of protists is
A. Amoeba proteus.
B. Plasmodium vivax.
C. Chlamydomonas.
D. Penicillium.
E. Paramecium.
22. The term "diatom" is based on the Greek root words meaning
A. very small.
B. glass shells.
C. cut through.
D. thread tail.
E. red tide.
23. The main function of the contractile vacuole is
A. chlorophyll production.
B. synthesis of carbohydrate.
C. eliminating excess water.
D. to be a photoreceptor to detect light.
E. resistance for survival during winter and times of drought.
24. The deposits of chalky fossils that built the White Cliffs of Dover were produced by
A. radiolaria.
B. foraminiferans.
C. ciliates.
D. diatoms (as diatomaceous earth).
E. dinoflagellates.
25. The Paramecium contains both a macronucleus and one or more small micronuclei. What are the functions
of these bodies?
A. The macronucleus undergoes meiosis to produce haploid micronuclei that are exchanged in conjugation; this
then produces a micronucleus for general cell housekeeping.
B. The micronucleus is exchanged in conjugation; the macronucleus is for general cell housekeeping.
C. The micronuclei control the cell and the macronuclei are exchanged in conjugation for reproduction.
D. The micronucleus is always 1n for conjugative reproduction, the macronucleus functions for general cell
coding, and the two are otherwise unrelated.
26. Which includes a sexually transmitted organism and the parasite organism that cause African sleeping
sickness?
A. sporozoa
B. zooflagellates
C. slime molds
D. diatoms
E. ciliates
27. A member of the sporozoan group of protists is
A. Amoeba proteus.
B. Plasmodium vivax.
C. Chlamydomonas.
D. Penicillium.
E. Paramecium.
28. Which form of protist has a complicated parasitic life cycle that nearly always involves the production of
infective spores?
A. sporozoans
B. zooflagellates
C. slime molds
D. diatoms
E. ciliates.
29. The kind of life cycle shared by animals and some forms of algae is the _____, which has _____.
A. haplontic cycle; a haploid adult form
B. haplontic cycle; a diploid adult form
C. diplontic cycle; a haploid adult form
D. diplontic cycle; a diploid adult form
E. alternation of generations cycle; alternating haploid and diploid adult forms
30. The kind of life cycle seen in chlamydomonas and some other forms of algae is the _____, which has
_____.
A. haplontic cycle; a haploid adult form
B. haplontic cycle; a diploid adult form
C. diplontic cycle; a haploid adult form
D. diplontic cycle; a diploid adult form
E. alternation of generations cycle; alternating haploid and diploid adult forms
31. The kind of life cycle shared by plants and some forms of algae is the _____, which has ______.
A. haplontic cycle; a haploid adult form
B. haplontic cycle; a diploid adult form
C. diplontic cycle; a haploid adult form
D. diplontic cycle; a diploid adult form
E. alternation of generations cycle; alternating haploid and diploid adult forms
32. Which can have a cellular form as well as an acellular (plasmodial) form with multiple nuclei?
A. sporozoa
B. zooflagellates
C. slime molds
D. diatoms
E. ciliates
33. The term "sporangium" is based on the Greek root words meaning
A. spore producer.
B. equal chambered.
C. asexual vessel.
D. seed vessel.
E. egg ovary.
34. Water molds are not placed with the fungi because
A. unlike fungi, water molds are saprophytic.
B. water molds have cell walls of cellulose whereas fungi have cell walls of chitin.
C. water molds grow only in water and fungi grow only on land.
D. adult water molds are diploid while adult fungi are haploid.
E. having a cell wall of cellulose and having diploid adult forms both make water molds different from fungi.
35. The endosymbiont hypothesis proposes
A. an origin of eukaryotic metabolic organelles.
B. mitochondria are thought to have developed through engulfment of an aerobic bacterium by a nucleated cell.
C. chloroplasts originated when a nucleated cell engulfed a cyanobacterium.
D. All of the choices.
36. A cyst
A. is a dormant cell with a resistant outer covering.
B. helps protists over winter.
C. aids a parasite in the survival of the host's digestive tract.
D. All of the choices are correct.
37. Protistan autotrophs include all of the following EXCEPT
A. Ciliophora.
B. Chlorophyta.
C. Bacillariphyta.
D. Rhodophyta.
38. Multicellular members of Chlorophyta include all of the following EXCEPT
A. Ulva.
B. Chara.
C. Spirogyra.
D. Volvox.
39. Economically important products of the Rhodophyta include
A. agar used to make capsules for drugs and vitamins as well as a solidifying agent for bacterial media.
B. caraageen used as an emulsifying agent for producing chocolate.
C. wrappings around sushi rolls.
D. All of the choices.
40. The Bacillariophyta
A. are the most numerous of the marine unicellular algae.
B. produce diatomaceous earth from their empty shells used for abrasives and filters.
C. form an important source of food and oxygen in aquatic ecosystems.
D. All of the choices.
41. In the protozoans, which of the following is miss-matched as to the disease that it causes?
A. Trypanosoma brucei - sleeping sickness
B. Trichomonas vaginalis - vaginitis and urethritis
C. Entamoeba histolytica - amoebic dysentery
D. Giardia lamblia - malaria
42. All single-celled protistans are heterotrophic protozoans.
True False
43. Some protistans can reproduce by both sexual and asexual means.
True False
44. All members of the kingdom Protista are unicellular.
True False
45. Brown algae have a dark photosynthetic pigment instead of the chlorophyll that is found in green algae.
True False
46. Brown algae along the rocky shores of the north temperate zones are able to withstand pounding tides and
drying because of their holdfasts and mucilaginous cell walls.
True False
47. Seaweeds include all the algae.
True False
48. All brown algae have the diplontic life cycle, in which the adult form is always diploid.
True False
49. Water molds may live in water or on land, and they are parasitic on fish, plants, and insects.
True False
50. The 1840s Irish potato famine was caused by a water mold parasite on potatoes.
True False
51. Plankton are organisms that are suspended in water and are food sources for heterotrophs.
True False
52. The term seaweeds is equally applied to members of the Chlorophyta, Rhodophyta, and Phaeophyta.
True False
53. A colony is a loose association of independent cells where some cells may be specialized for reproduction.
True False
54. Describe the seven major groups of protists.
55. Explain the characteristics of each of the three life cycles of multicellular organisms, and note the groups of
organisms that use each life cycle.
56. How are the green algae similar to and different from the plants?
57. How are the green algae similar to and different from the red algae and brown algae?
58. The human body generally forms antibodies ("immune chemicals'') to foreign substances detected in the
blood plasma or in interstitial spaces within a short time. Explain why the malaria organism, unlike "shortlived'' influenza and other infections, can survive in the human host to cause recurrent chills and fevers for
years.
59. Plasmodial slime molds exist as multinucleated cytoplasmic masses until they develop sporangia during
times of drought. Since they violate the "cell doctrine'' for a part of their life cycle, why are they not considered
a primitive form of life?
60. Explain the similarities and differences among slime molds, water molds, and fungi.
Chapter 22 KEY
1. C
2. A
3. B
4. D
5. B
6. D
7. D
8. D
9. D
10. E
11. C
12. D
13. A
14. C
15. B
16. C
17. D
18. C
19. C
20. B
21. E
22. C
23. C
24. B
25. B
26. B
27. B
28. A
29. D
30. A
31. E
32. C
33. D
34. E
35. D
36. D
37. A
38. C
39. D
40. D
41. D
42. FALSE
43. TRUE
44. FALSE
45. FALSE
46. TRUE
47. FALSE
48. FALSE
49. TRUE
50. TRUE
51. TRUE
52. TRUE
53. TRUE
54. Answers will vary.
55. Answers will vary.
56. Answers will vary.
57. Answers will vary.
58. Answers will vary.
59. Answers will vary.
60. Answers will vary.