Question 1

Paralytic shellfish poisoning occurs when_________ are eaten by humans or marine mammals.

Accepted Answer

A)   diatoms
B)   excavates
C)   dinoflagellates
D)   diplomonads
E)   euglenids

Question 2

The group of protistan aquatic organisms known generally as _________produces most of the world?s oxygen.

Accepted Answer

The answer of The group of protistan aquatic organisms known...

Question 3

Which of the following is the parasite apicomplexans that causes malaria if it infects a human host?

Accepted Answer

A)   Pfisteria
B)   Trichomonas
C)   Paramecium
D)   Plasmodium
E)   Giardia

Question 4

Beavers are major carriers of Giardia, which is a member of the group _________that can cause severe diarrhea in people who drink water that contains the organism?s cysts.

Accepted Answer

diplomonad

Question 5

The protists are a group that can best be defined as ʺany eukaryote that is not a plant, animal, or fungus.ʺ

Accepted Answer

A) True 
 B)False

Question 6

The coral that make up a tropical coral reef can survive only in clear, well-lit waters because of the symbiotic, photosynthetic_________ that live within the tissues of the coral.

Accepted Answer

The answer of The coral that make up a tropical...

Question 7

Which of the following has pseudopods?

Accepted Answer

A)   Diatom
B)   Ciliate
C)   Apicomplexan
D)   Slime mold
E)   Amoeba

Question 8

Which protist causes African sleeping sickness?

Accepted Answer

A)   Plasmodium
B)   Didinium
C)   Giardia
D)   Pfiesteria
E)   Trypanosoma E

Question 9

Which of the following best fits into the protistʹs group?

Accepted Answer

A)   Plants
B)   Animals
C)   Prokaryotes
D)   Fungi
E)   Any eukaryote that is not a plant, animal, or fungus

Question 10

A man is brought to the hospital suffering from nausea, vomiting, and severe stomach cramps. He had recently returned from a hiking trip in northern Minnesota. A sample taken from the man shows a single-celled flagellate organism that lacks mitochondria but has two nuclei. This organism is a(n)

Accepted Answer

A)   excavate.
B)   diatom.
C)   euglenozoan.
D)   green alga.
E)   apicomplexan.

Question 11

The active, feeding form of a(n) _________is a thin, multinucleate plasmodium.

Accepted Answer

acellular ...

Question 12

Plasmodial slime molds are described as acellular because they

Accepted Answer

A)   are heterotrophic.
B)   have no membranes surrounding their nuclei.
C)   lack DNA.
D)   have no nuclei.
E)   reproduce asexually.

Question 13

Which organisms are responsible for the majority of photosynthesis?

Accepted Answer

A)   Conifers
B)   Cyanobacteria
C)   Phytoplankton
D)   Flowering plants
E)   Ferns

Question 14

Which protozoan group consists entirely of parasitic forms?

Accepted Answer

A)   Ciliates
B)   Radiolarians
C)   Amoebas
D)   Apicomplexans
E)   Slime molds

Question 15

One of the techniques for controlling the spread of malaria is to drape netting over the bed. What are the two reasons that this measure would prevent the spread of malaria?

Accepted Answer

Plasmodium rely on mosquitoes to spread ...

Question 16

The oomycete that nearly destroyed the French wine industry in the late 1870s was

Accepted Answer

A)   a cercozoan.
B)   a protozoan.
C)   a water mold.
D)   a slime mold.
E)   red tide.

Question 17

A pseudoplasmodium is a(n)

Accepted Answer

A)   aggregation of mycelia.
B)   disease-causing protist.
C)   acellular slime mold.
D)   group of cellular slime mold cells.
E)   extension of the slime mold that engulfs prey.

Question 18

Protists that absorb nutrients from dead organic matter are called

Accepted Answer

A)   decomposers.
B)   parasitic.
C)   symbiotic.
D)   photosynthetic.
E)   predatory.

Question 19

Which of the following characteristics distinguishes red algae from diatoms and dinoflagellates?

Accepted Answer

A)   One is photosynthetic, whereas the other is not.
B)   One is multicellular, whereas the other is not.
C)   One lives in an aquatic environment.
D)   One is a protist, whereas the other is not.
E)   One is eukaryotic, whereas the other is not.

Question 20

What would life on Earth be like today if eukaryotic protists had not evolved?

Accepted Answer

Life on Earth would most likely be a diversity of prokaryotes, but no eukaryotes.
This is because plants, animals, and fungi likely evolved from protists that subsequently underwent radical changes in their cellular structure and eukaryotic design.

Exam 21: The Diversity of Protists

Paralytic shellfish poisoning occurs when_________ are eaten by humans or marine mammals.

Correct AnswerverifiedShow Answer

The group of protistan aquatic organisms known generally as _________produces most of the world?s oxygen.

Correct AnswerverifiedShow Answer

Which of the following is the parasite apicomplexans that causes malaria if it infects a human host?

Correct AnswerverifiedShow Answer

Beavers are major carriers of Giardia, which is a member of the group _________that can cause severe diarrhea in people who drink water that contains the organism?s cysts.

Correct Answerverifieddiplomonad

The protists are a group that can best be defined as ʺany eukaryote that is not a plant, animal, or fungus.ʺ

Correct AnswerverifiedShow Answer

The coral that make up a tropical coral reef can survive only in clear, well-lit waters because of the symbiotic, photosynthetic_________ that live within the tissues of the coral.

Correct AnswerverifiedShow Answer

Which of the following has pseudopods?

Correct AnswerverifiedShow Answer

Which protist causes African sleeping sickness?

Correct AnswerverifiedE

Which of the following best fits into the protistʹs group?

Correct AnswerverifiedShow Answer

A man is brought to the hospital suffering from nausea, vomiting, and severe stomach cramps. He had recently returned from a hiking trip in northern Minnesota. A sample taken from the man shows a single-celled flagellate organism that lacks mitochondria but has two nuclei. This organism is a(n)

Correct AnswerverifiedShow Answer

The active, feeding form of a(n) _________is a thin, multinucleate plasmodium.

Correct Answerverifiedacellular ...View AnswerShow Answer

Plasmodial slime molds are described as acellular because they

Correct AnswerverifiedShow Answer

Which organisms are responsible for the majority of photosynthesis?

Correct AnswerverifiedShow Answer

Which protozoan group consists entirely of parasitic forms?

Correct AnswerverifiedShow Answer

One of the techniques for controlling the spread of malaria is to drape netting over the bed. What are the two reasons that this measure would prevent the spread of malaria?

Correct AnswerverifiedPlasmodium rely on mosquitoes to spread ...View AnswerShow Answer

The oomycete that nearly destroyed the French wine industry in the late 1870s was

Correct AnswerverifiedShow Answer

A pseudoplasmodium is a(n)

Correct AnswerverifiedShow Answer

Protists that absorb nutrients from dead organic matter are called

Correct AnswerverifiedShow Answer

Which of the following characteristics distinguishes red algae from diatoms and dinoflagellates?

Correct AnswerverifiedShow Answer

What would life on Earth be like today if eukaryotic protists had not evolved?

Correct AnswerverifiedLife on Earth would most likely be a diversity of prokaryotes, but no eukaryotes. This is because plants, animals, and fungi likely evolved from protists that subsequently underwent radical changes in their cellular structure and eukaryotic design.

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diplomonad

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E

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acellular ...
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Plasmodium rely on mosquitoes to spread ...
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Life on Earth would most likely be a diversity of prokaryotes, but no eukaryotes. This is because plants, animals, and fungi likely evolved from protists that subsequently underwent radical changes in their cellular structure and eukaryotic design.