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Multiple Choice Quiz
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1
Protists are classified in the domain _____.
A)Bacteria
B)Archaea
C)Eukarya
2
The endosymbiotic hypothesis suggests _____.
A)that DNA evolved from RNA
B)how mitochondria and chloroplasts arose
C)the protists evolved prior to bacteria
D)none of the above
3
The absence of mitochondria and the presence of two nuclei in Giardia suggests a nucleated cell preceded the acquisition of mitochondria.
A)True
B)False
4
The endosymbiotic hypothesis suggests chloroplasts may have originated when _____ were engulfed by a nucleated cell.
A)aerobic bacteria
B)cyanobacteria
C)spirochete bacteria
5
Protists reproduce _____.
A)asexually
B)sexually
C)both A and B
6
Protists are similar to plants which protect their gametes and zygote.
A)True
B)False
7
Some parasitic protists pass from host to host when food and water are contaminated by _____ containing feces.
A)endospore
B)sperm
C)cyst
D)zygote
8
A cyst is comparable to a ______ since it helps a protist survive bad times.
A)zygote
B)bacterial endospore
C)ribosome
D)nucleoid
9
The function of contractile vacuoles is to _____.
A)digest food
B)produce gametes
C)perform photosynthesis
D)expel excess water
10
Which of the following is a disease caused by a protist?
A)AIDS
B)mad cow disease
C)malaria
D)tuberculosis
11
Which of the following prevents protists from being classified as fungi?
A)the absence of a nucleus
B)the absence of chitin in their cell wall
C)the absence of mitochondria
D)the absence of a plasma membrane
12
The classification of protists is quite easy since they are not very diverse.
A)True
B)False
13
The protists that are producers that float near the surface of the water are referred to as _____.
A)protozoa
B)parasites
C)phytoplankton
D)water molds
14
Protists are _____.
A)unicellular
B)multicellular
C)some are unicellular, others are multicellular
15
All protists have cell walls.
A)True
B)False
16
Which of the following evolutionary events is first seen among the protists?
A)plasma membrane
B)nucleus
C)cell wall
D)photosynthesis
17
The _____ of eukaryotes are believed to have originated from a spirochete bacterium.
A)nuclei
B)chloroplasts
C)flagella
D)ribosomes
18
Some protists have unique organelles not seen in any other eukaryotes.
A)True
B)False
19
Which of the following are most closely related to the first plants?
A)green algae
B)diatoms
C)euglenoids
D)red algae
20
Green algae are always green.
A)True
B)False
21
Green algae are found _____.
A)on tree trunks
B)in fresh water
C)in the ocean
D)all of the above
22
Algae and plants are believed to have evolved from different ancestors.
A)True
B)False
23
Green algae are organized as _____.
A)colonies
B)single cells
C)multicellular forms
D)all of the above
24
Brown algae _____.
A)are primarily marine
B)are microscopic in size
C)have the same pigments as green algae
D)all of the above
25
Phylum Euglenophyta are mostly marine, multicellular organisms.
A)True
B)False
26
Which of the following photosynthetic protists do not have flagella?
A)dinoflagellates
B)euglenoids
C)diatoms
D)none of the above
27
Most dinoflagellates have one flagella.
A)True
B)False
28
Diatomaceous earth is mined for use as _____.
A)filtering agents
B)soundproofing materials
C)scouring powders
D)all of the above
29
Algae are the phytoplankton which photosynthesize and produce the food that maintains an entire community of organisms.
A)True
B)False
30
Which of the following is a heterotrophic organism?
A)euglena
B)zooflagellate
C)cyanobacterium
D)dinoflagellate
31
Protozoa that have no means of locomotion are _____.
A)Amoeboids
B)Ciliates
C)Zooflagellates
D)Sporozoa
32
Protozoa live only in water.
A)True
B)False
33
Protozoa reproduce _____.
A)asexually
B)sexually
C)both A and B
34
Slime molds are unlike fungi _____.
A)because they all have flagellated cells
B)their cell walls don't contain chitin
C)both A and B
35
Dinoflagellates are heterotrophic.
A)True
B)False
36
Which of the following correctly describes protists?
A)their DNA is enclosed in a nucleus
B)photosynthetic protists have chloroplasts
C)protozoans used to be classified as animals
D)all of the above
37
Green algae are believed to be closely related to the first plants because both groups _____.
A)possess chlorophylls a and b
B)have a cell wall that contains chitin
C)store reserve food as glycogen
D)all of the above
38
Green algae store reserve food as starch inside the chloroplast.
A)True
B)False
39
Fungi associate with _____ to form lichens.
A)diatoms
B)brown algae
C)amoeboids
D)green algae
40
When a Chlamydomonas zygospore germinates it produces _____ zoospores by meiosis.
A)one
B)two
C)three
D)four
41
Chlamydomonas zygospores _____.
A)germinate immediately following their formation
B)contain a nonmotile egg
C)are able to survive unfavorable conditions
D)all of the above
42
Species that display oogamy produce heterogametes.
A)True
B)False
43
The alternation of generations of multicellular green algae is identical to the alternation of generations of plants.
A)True
B)False
44
A loose association of independent cells in which there may be specialized cells for reproduction is called a _____.
A)filament
B)colony
C)gametophyte
45
The sporophytes and gametophytes of multicellular green algae have the same appearance.
A)True
B)False
46
The temporary union of two individuals during which there is an exchange of genetic material is called _____.
A)conjugation
B)oogamy
C)budding
D)germination
47
Multicellular forms of green, red, and brown algae are called seaweeds.
A)True
B)False
48
Brown algae store their reserve food as _____.
A)cellulose
B)laminarin
C)glycogen
D)chitin
49
Red algae show extensive tissue differentiation.
A)True
B)False
50
Which of the following is an example of a colonial green algae?
A)Chlamydomonas
B)Giardia
C)Volvox
D)Paramecium
51
The organisms in the phylum Phaeophyta are more commonly referred to as _____ algae.
A)green
B)red
C)brown
52
The cell wall of _____ has an outer covering of silica.
A)brown algae
B)diatoms
C)green algae
D)ciliates
53
Which of the following are not photosynthetic?
A)ciliates
B)diatoms
C)dinoflagellates
D)euglenoids
54
All of the euglenoids have chloroplasts.
A)True
B)False
55
Which of the following is not characteristic of the euglenoids?
A)an eyespot
B)two flagella
C)a pellicle
D)cell walls containing silica
56
Euglenoids practice sexual reproduction.
A)True
B)False
57
A red tide in the ocean is caused by an increase in the number of _____.
A)dinoflagellates
B)brown algae
C)euglenoids
D)diatoms
58
Euglenoids that lack chloroplasts ingest or absorb their food.
A)True
B)False
59
The production of oxygen and food by the _____ contributes significantly to the health of the biosphere.
A)water molds
B)paramecium
C)diatoms
D)sporozoans
60
Which of the following are unicellular organisms?
A)ciliates
B)amoeboids
C)zooflagellates
D)all of the above
61
The organisms classified as _____ are unicellular, heterotrophic and move by means of flagella.
A)zooflagellates
B)filamentous green algae
C)dinoflagellates
D)amoeboids
62
Which of the following depend on pseudopods for locomotion?
A)zooflagellates
B)ameboids
C)sporozoans
D)ciliates
63
The most complex of the protozoans are the _____.
A)diatoms
B)zooflagellates
C)slime molds
D)ciliates
64
Transverse binary fission is a form of _____ reproduction practiced by ciliates.
A)sexual
B)asexual
65
Ciliates have two types of nuclei.
A)True
B)False
66
Amoeboids use their pseudopods to surround and phagocytize their prey.
A)True
B)False
67
The host organisms for Plasmodium vivax which causes malaria are _____.
A)humans
B)mosquitoes
C)both A and B
68
The spore forming protozoans are the _____.
A)brown algae
B)sporozoans
C)slime molds
D)ciliates
69
Sporozoans form _____ relationships with other organisms.
A)parasitic
B)commensalistic
C)mutualistic
70
Slime molds and water molds _____.
A)make their food by doing photosynthesis
B)ingest their food by phagocytosis
C)absorb their food from a host
D)none of the above
71
Water molds have a cell wall that contains _____.
A)cellulose
B)chitin
C)silica
D)all of the above
72
Slime molds and water molds all _____.
A)have flagellated cells at some time during their life cycle
B)have cell walls
C)form parasitic relationships with other organisms
D)all of the above
73
A reproductive structure that produces spores by meiosis is called a _____.
A)pellicle
B)sporangium
C)plasmodium
D)micronucleus
74
Protist contributions to the functioning of the biosphere include _____.
A)performing photosynthesis
B)decomposing dead organic material
C)forming symbiotic relationships with other living things
D)all of the above





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