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1
Endosymbiosis proposes that mitochondria developed from
A)an organism similar to Pelomyxa.
B)complex internal membrane structures such as those found in Pelomyxa.
C)symbiotic, aerobic bacteria engulfed by early eukaryotic cells.
D)viral RNA that invaded early eukaryotes.
2
The theory of endosymbiosis proposes that chloroplasts originated as symbiotic aerobic bacteria and mitochondria originated from a second endosymbiotic event.
A)True
B)False
3
Most animals exhibit ________ meiosis.
A)zygotic
B)gametic
C)sporic
D)All of the above
4
The term "alternation of generations" applies to organisms that undergo
A)zygotic meiosis.
B)gametic meiosis.
C)sporic meiosis.
D)incomplete meiosis.
5
The only movement in protists is accomplished by a gliding mechanism.
A)True
B)False
6
The three major phyla of algae are subdivided into three groups according to the kind of chlorophyll pigment they contain.
A)True
B)False
7
Red tides are associated with
A)dinoflagellates.
B)sporozoans.
C)euglenoids.
D)diatoms.
8
The organism that causes malaria belongs to which one of the following groups?
A)Flagellates
B)Sporozoans
C)Ciliates
D)Euglenoids
9
Slime molds and water molds are heterotrophic protists that are sometimes confused with fungi.
A)True
B)False
10
Volvox are an example of
A)multicellularity.
B)an aggregation.
C)a colonial organism.
D)a non-motile spore former.
11
Protists range in size from a single celled organism to a multicellular organism with the largest being over 100 meters in length.
A)True
B)False
12
Phylum ___________ are motile by flagella and include both heterotrophic and photosynthetic forms.
A)Euglenoids
B)Diatoms
C)Ciliophora
D)Ciliates
13
Paramecium is a member of phylum
A)Ciliophora.
B)Euglenozoa.
C)Rhizopoda.
D)Apicomplexa.
E)None of the above
14
The first fossils of protozoans are approximately __________ years old.
A)1.5 million
B)1.5 billion
C)3.5 million
D)3.5 billion
E)4.0 million
15
There are 5 major phyla of protists.
A)True
B)False
16
Protists that ingest visible particles of food are called
A)osmotrophs.
B)saprozoic feeders.
C)phototrophs.
D)phagotrophs.
17
Biologists suggest that sexual reproduction evolved in eukaryotes not necessarily as a means of reproduction but rather as a mechanism for repairing chromosomes.
A)True
B)False
18
Which of the following is a type of sexual reproduction?
A)Parthenogenesis
B)Mitosis
C)Self-fertilization
D)None of the above-all are types of asexual reproduction
19
Asexual reproduction is one of the most important evolutionary innovations as it provides a means of generating different combinations of genes among individuals, providing the raw material for evolution.
A)True
B)False
20
Plasmodium is the sporozoan that causes malaria and has a complex life cycle that alternates between ticks and mammals.
A)True
B)False





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