Question 1

The members of the Supergroup Archaeplastida that have cell walls impregnated with calcium carbonate and help build coral reefs are the _________.

Accepted Answer

A)  diatoms
B)  dinoflagellates
C)  multicellular green algae
D)  brown algae
E)  red algaeF) A) and E)
G) C) and D)

Question 2

The endosymbiont hypothesis proposes all of the following EXCEPT

Accepted Answer

A)  mitochondria and chloroplasts were once free-living bacteria.
B)  a nucleated cell engulfed an aerobic bacterium which evolved into mitochondria.
C)  prokaryotes evolved when an aerobic bacterium engulfed a cyanobacterium.
D)  chloroplasts originated when a nucleated cell engulfed a cyanobacterium.E) C) and D)
F) None of the above

Question 3

This name of the filamentous algae pictured here,belongs in the supergroup Archaeplastida,is _______.

Accepted Answer

A)  Ulva
B)  Plasmodium
C)  Chlamydomonas
D)  Spirogyra
E)  VolvoxF) C) and E)
G) None of the above D

Question 4

Supergroup Opisthokinta includes all of the following organisms EXCEPT

Accepted Answer

A)  animals.
B)  plants.
C)  fungi.
D)  choanoflagellates.E) A) and B)
F) A) and C)

Question 5

Figure:  The evolutionary relationships between the eukaryotic supergroups are depicted in the diagram.
-Diatoms share a more recent common ancestor with dinoflagellates than with water molds.

Accepted Answer

A) True 
 B)False

Question 6

The various forms of algae (Archaeplastids) are NOT considered plants because they

Accepted Answer

A)  are not multicellular.
B)  lack strengthened cell walls.
C)  never have specialized tissues.
D)  lack plant structures such as true roots,stems,and leaves.
E)  All of the choices are differences that separate the algae from plants.F) A) and C)
G) B) and E)

Question 7

Protist reproduction

Accepted Answer

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.F) C) and E)
G) A) and B)

Question 8

_________ is a mixotrophic protozoan that is able to combine autotrophic and heterotrophic nutritional modes.

Accepted Answer

A)  Euglena
B)  Plasmodium
C)  Amoeba
D)  GiardiaE) A) and D)
F) A) and C)

Question 9

The 1840s Irish potato famine was caused by a water mold parasite on potatoes.

Accepted Answer

A) True 
 B)False

Question 10

Which description best supports the endosymbiotic theory of organelles?

Accepted Answer

A)  Eukaryotic cells acquired mitochondria and plastids by engulfing free-living bacteria and developed a symbiotic relationship with them.Mitochondria were derived from anaerobic bacterium while choloroplasts were derived from aerobic bacterium.
B)  Eukaryotic cells acquired mitochondria and plastids by engulfing free-living bacteria and developed a symbiotic relationship with them.Mitochondria were derived from aerobic bacterium while choloroplasts were derived from cyanobacterium.
C)  Eukaryotic cells acquired nuclei and flagella by engulfing free-living bacteria and developed a symbiotic relationship with them.Nuclei were derived from aerobic bacterium while flagella were derived from motile bacteria.
D)  Eukaryotic cells acquired mitochondria and flagella by engulfing free-living bacteria and developed a symbiotic relationship with them.Mitochondria were derived from aerobic bacterium while flagella were derived from motile bacteria.E) A) and B)
F) B) and D)

Question 11

Which feature has to be present in a protist in order to classify it as a photoautotroph?

Accepted Answer

A)  The presence of mitochondria within the cell.
B)  The ability to synthesize organic compounds.
C)  The presence of a light trapping pigment.
D)  The presence of cellulose in the cell wall.
E)  The ability to synthesize inorganic compounds.F) D) and E)
G) C) and D)

Question 12

The deposits of chalky fossils that built the White Cliffs of Dover were formed by

Accepted Answer

A)  Amoebozoans.
B)  Rhizarians.
C)  Excavates.
D)  Opisthokonts.
E)  Chromalveolates.F) C) and E)
G) A) and B)

Question 13

The most widely accepted formal classification of protists assigns them to

Accepted Answer

A)  the kingdom Protista.
B)  six different supergroups.
C)  Domain Archaea.
D)  Domain EubacteriaE) A) and D)
F) All of the above B

Question 14

Which definition would best describe the feeding mechanism of Euglena?

Accepted Answer

A)  carnivorous
B)  decomposer
C)  heterotrophic
D)  photoautotrophic
E)  mixotrophicF) B) and E)
G) A) and C)

Question 15

The term "protists" is used to refer to eukaryotes that are not plants,animals or fungi.

Accepted Answer

A) True 
 B)False

Question 16

Slime molds,found in the Supergroup Amoebozoa,were once classified as fungi.What characteristics of the slime molds distinguish them from fungi?

Accepted Answer

A)  Slime molds lack cell walls.
B)  They are flagellated cells at certain stages of the life cycle.
C)  The vegetative state of the slime mold is mobile and amoeboid.
D)  All of these characteristics distinguish slime molds from fungi.E) A) and D)
F) None of the above

Question 17

Which protistan structure is not correctly matched with its function?

Accepted Answer

A)  pseudopodia - movement and feeding
B)  cyst - a reproductive structure
C)  trichocyst - defense and capture of prey
D)  pyrenoid - synthesis of starchE) All of the above
F) A) and D) B

Question 18

Which organelles serve as the energy centers for most Protists?

Accepted Answer

A)  mitochondria and plastids
B)  chloroplasts and Golgi Bodies
C)  mitochondria and Endoplasmic reticulum
D)  mitochondria and nucleusE) A) and B)
F) All of the above

Question 19

Which of the following organisms belong to the supergroup Amoebozoans?

Accepted Answer

A)  Amoeboids and euglenoids
B)  Plasmodial and water molds
C)  Plasmodial and cellular slime molds
D)  Cellular slime molds and radiolarians
E)  Choanoflagellates and diplomonadsF) A) and D)
G) C) and D)

Question 20

A common cause of amoebic dysentery is

Accepted Answer

A)  Trichomonas vaginalis.
B)  Entamoeba histolytica.
C)  Plasmodium falciparum.
D)  Giardia intestinalis.E) B) and D)
F) A) and B)

Exam 21: Protist Evolution and Diversity

The members of the Supergroup Archaeplastida that have cell walls impregnated with calcium carbonate and help build coral reefs are the _________.

Correct AnswerverifiedShow Answer

The endosymbiont hypothesis proposes all of the following EXCEPT

Correct AnswerverifiedShow Answer

This name of the filamentous algae pictured here,belongs in the supergroup Archaeplastida,is _______.

Correct AnswerverifiedD

Supergroup Opisthokinta includes all of the following organisms EXCEPT

Correct AnswerverifiedShow Answer

Figure: The evolutionary relationships between the eukaryotic supergroups are depicted in the diagram. -Diatoms share a more recent common ancestor with dinoflagellates than with water molds.

Correct AnswerverifiedShow Answer

The various forms of algae (Archaeplastids) are NOT considered plants because they

Correct AnswerverifiedShow Answer

Protist reproduction

Correct AnswerverifiedShow Answer

_________ is a mixotrophic protozoan that is able to combine autotrophic and heterotrophic nutritional modes.

Correct AnswerverifiedShow Answer

The 1840s Irish potato famine was caused by a water mold parasite on potatoes.

Correct AnswerverifiedShow Answer

Which description best supports the endosymbiotic theory of organelles?

Correct AnswerverifiedShow Answer

Which feature has to be present in a protist in order to classify it as a photoautotroph?

Correct AnswerverifiedShow Answer

The deposits of chalky fossils that built the White Cliffs of Dover were formed by

Correct AnswerverifiedShow Answer

The most widely accepted formal classification of protists assigns them to

Correct AnswerverifiedB

Which definition would best describe the feeding mechanism of Euglena?

Correct AnswerverifiedShow Answer

The term "protists" is used to refer to eukaryotes that are not plants,animals or fungi.

Correct AnswerverifiedShow Answer

Slime molds,found in the Supergroup Amoebozoa,were once classified as fungi.What characteristics of the slime molds distinguish them from fungi?

Correct AnswerverifiedShow Answer

Which protistan structure is not correctly matched with its function?

Correct AnswerverifiedB

Which organelles serve as the energy centers for most Protists?

Correct AnswerverifiedShow Answer

Which of the following organisms belong to the supergroup Amoebozoans?

Correct AnswerverifiedShow Answer

A common cause of amoebic dysentery is

Correct AnswerverifiedShow Answer

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