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Biology 2015

Sylvia S. Mader, Michael Windelspecht

Chapter 21

Protist Evolution and Diversity


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Problem 1

Mitochondria in protists originated from
a. cyanobacteria.
b. chloroplasts.
c. anaerobic bacteria.
d. aerobic bacteria.
e. eukaryotic cells.

Heather T.
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Problem 2

Through what process did eukaryotic cells gain chloroplasts and mitochondria?
a. engulfment
b. endosymbiosis
c. endocytosis
d. phagocytosis
e. transformation

Nalvi D.
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Problem 3

What feature of protists allow them to survive harsh environmental conditions?
a. vegetative cells
b. plankton
c. cysts
d. plastids
e. vacuoles

Alexander C.
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Problem 4

Which of these is a green alga?
a. Volvox
b. Gelidium
c. Euglena
d. Paramecium
e. Plasmodium

Nalvi D.
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Problem 5

In Chlamydomonas, the adult vegetative cell
a. is haploid.
b. survives harsh environments.
c. produces zygospores.
d. is dormant.
e. is ciliated

Rabia B.
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Problem 6

In the life cycle of Ulva, which stage is diploid?
a. spore
b. sporophyte
c. gamete
d. gametophyte

Nalvi D.
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Problem 7

Kelp represent which type of protist?
a. archaeplastida
b. chromalveolata
c. opisthokonta
d. excavata
e. rhizaria

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Problem 8

What is the main component of a diatom shell?
a. agar
b. peptidoglycan
c. silica
d. calcium carbonate
e. paramylon

Nalvi D.
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Problem 9

a. usually reproduce sexually.
b. have protective cellulose plates.
c. are insignificant producers of food and oxygen.
d. have cilia instead of flagella.
e. tend to be larger than brown algae.

Jared A.
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Problem 10

a. move by pseudopods.
b. are not as varied as other protists.
c. feed and move using cilia.
d. do not divide by binary fission.
e. are closely related to the radiolarians

Nalvi D.
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Problem 11

Apicomplexans are responsible for which disease?
a. vaginitis
b. African sleeping sickness
c. red tide
d. Chagas disease
e. malaria

Nkoli A.
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Problem 12

Protists that may lack mitochondria and possess deep oral grooves are known as
a. excavates.
b. apicomplexans.
c. alveolates.
d. amoeboids.
e. ciliates.

Nalvi D.
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Problem 13

Which genus of protists causes African sleeping sickness and Chagas disease?
a. Plasmodium
b. Trypanosoma
c. Entamoeba
d. Trichomonas
e. Giardia

Darolnisha C.
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Problem 14

Plasmodial and cellular _____ are important decomposers that have an amoeboid vegetative state.
a. brown algae
b. water molds
c. filamentous algae
d. slime molds
e. red algae

Nalvi D.
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Problem 15

Skeletons called _____ are formed by rhizarians and can be used to date fossils.
a. tests
b. plankton
c. cysts
d. plastids
e. valves

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