Question 1

Members of which group are one of the most important producers in marine ecosystems, although sometimes they form blooms known as red tides?

Accepted Answer

A)  green algae 
B)  red algae 
C)  euglenoids 
D)  dinoflagellates 
E)  brown algae 
A)  green algae 
B)  red algae 
C)  euglenoids 
D)  dinoflagellates 
E)  brown algae

Question 2

Late blight of potatoes that caused the Irish potato famine is caused by members of the genus __________.

Accepted Answer

A)  Myxomycota 
B)  Phytophthora 
C)  Giardia 
D)  Macrocystis 
E)  Physarum 
A)  Myxomycota 
B)  Phytophthora 
C)  Giardia 
D)  Macrocystis 
E)  Physarum

Question 3

Most protists are:

Accepted Answer

A)  aquatic. 
B)  parasitic. 
C)  terrestrial. 
D)  arboreal. 
E)  coenocytic. 
A)  aquatic. 
B)  parasitic. 
C)  terrestrial. 
D)  arboreal. 
E)  coenocytic.

Question 4

Figure 26-2
Use the figure to answer the corresponding question(s).  
-The outcome of the process illustrated in Figure 26-2 is:

Accepted Answer

A)  four new genetically identical cells that differ genetically from what they were before. 
B)  four new but genetically distinct cells. 
C)  two new genetically identical cells that differ genetically from what they were before. 
D)  two new but genetically distinct cells. 
E)  one male and one female cell. 
A)  four new genetically identical cells that differ genetically from what they were before. 
B)  four new but genetically distinct cells. 
C)  two new genetically identical cells that differ genetically from what they were before. 
D)  two new but genetically distinct cells. 
E)  one male and one female cell.

Question 5

Who am I? I am characterized by having a test and axopods.

Accepted Answer

A)  green algae 
B)  actinopods 
C)  opisthokonts 
D)  stramenopiles 
E)  forams 
A)  green algae 
B)  actinopods 
C)  opisthokonts 
D)  stramenopiles 
E)  forams

Question 6

Backpackers' diarrhea, a common infection among campers and hikers, is caused by drinking untreated water.Consequently, backpacker's diarrhea is due most likely to __________ in the water.

Accepted Answer

A)  Phytophthora 
B)  Amoeba 
C)  Euglena 
D)  Trypanosoma 
E)  Giardia 
A)  Phytophthora 
B)  Amoeba 
C)  Euglena 
D)  Trypanosoma 
E)  Giardia

Question 7

Ancestors of __________ may have possessed mitochondria which were lost or reduced during evolutionay history.

Accepted Answer

A)  Laminaria 
B)  Amoeba 
C)  Euglena 
D)  Giardia 
E)  Paramecium 
A)  Laminaria 
B)  Amoeba 
C)  Euglena 
D)  Giardia 
E)  Paramecium

Question 8

The __________ are excavates that lack functional mitochondria and Golgi.

Accepted Answer

A)  cryptomonads 
B)  chrysophytes 
C)  diplomonads 
D)  water molds 
E)  slime molds 
A)  cryptomonads 
B)  chrysophytes 
C)  diplomonads 
D)  water molds 
E)  slime molds

Question 9

Which group of algae are a commercial source of agar and carrageenan?

Accepted Answer

A)  red algae 
B)  brown algae 
C)  dinoflagellates 
D)  euglenoids 
E)  green algae 
A)  red algae 
B)  brown algae 
C)  dinoflagellates 
D)  euglenoids 
E)  green algae

Question 10

Figure 26-1
Use the figure to answer the corresponding question(s).  
-Individuals in this group often have intracellular shells of interlocking plates.

Accepted Answer

A)  green algae 
B)  red algae 
C)  euglenoids 
D)  dinoflagellates 
E)  diatoms 
A)  green algae 
B)  red algae 
C)  euglenoids 
D)  dinoflagellates 
E)  diatoms

Question 11

Members of the __________ are thought to have given rise to plants.

Accepted Answer

A)  green algae 
B)  red algae 
C)  euglenoids 
D)  dinoflagellates 
E)  diatoms 
A)  green algae 
B)  red algae 
C)  euglenoids 
D)  dinoflagellates 
E)  diatoms

Question 12

According to the serial endosymbiosis hypothesis, the ancestors of mitochondria are thought to be purple bacteria.
____________________

Accepted Answer

A) True 
 B)False

Question 13

MATCHING
Match the supergroup with the representative clade.
a.Rhizarians
d.Archaeplastids
b.Unikonts
e.Chromalveolates
c.Excavates
-Discuss the uncertainties and available evidence related to the evolutionary relationships among the following algal protists: brown algae, golden algae, red algae, and green algae.Include in your discussion how they relate to the plants.

Accepted Answer

Concepts to Consider: Consult

Question 14

The protist that causes malaria belongs to the genus Macrocystis.
___________________

Accepted Answer

A) True 
 B)False

Question 15

Coralline forms of members of this group are ecologically important in the formation of coral reefs.

Accepted Answer

A)  red algae 
B)  brown algae 
C)  dinoflagellates 
D)  euglenoids 
E)  green algae 
A)  red algae 
B)  brown algae 
C)  dinoflagellates 
D)  euglenoids 
E)  green algae

Question 16

_______ are characterized by having a micronucleus and a macronucleus.

Accepted Answer

A)  Euglenoids 
B)  Ciliates 
C)  Diplomonads 
D)  Amoebozoans 
E)  Actinopods 
A)  Euglenoids 
B)  Ciliates 
C)  Diplomonads 
D)  Amoebozoans 
E)  Actinopods

Question 17

You find a protist that has a single flagellum surrounded by a collar of microvilli.You correctly conclude that this organism is:

Accepted Answer

A)  a cellular slime mold. 
B)  a choanoflagellate. 
C)  a plasmodial slime mold. 
D)  not a unikont. 
E)  not motile. 
A)  a cellular slime mold. 
B)  a choanoflagellate. 
C)  a plasmodial slime mold. 
D)  not a unikont. 
E)  not motile.

Question 18

Name the two main clades of Rhizaria, then list one way of distinguishing one of those clades from the other.

Accepted Answer

The two main clades of Rhizaria and the

Question 19

MATCHING
Match the supergroup with the representative clade.
a.Rhizarians
d.Archaeplastids
b.Unikonts
e.Chromalveolates
c.Excavates
-Forams and actinopods

Accepted Answer

The answer of MATCHING
Match the supergroup with the representative clade.
a.Rhizarians
d.Archaeplastids
b.Unikonts
e.Chromalveolates
c.Excavates
-Forams...

Question 20

You find a unicellular organism that forms lobe-like pseudopodia.When you expose the cells to cAMP, they aggregate into a slug like structure.Based on this information, you correctly conclude that this organism is:

Accepted Answer

A)  Entamoeba histolytica. 
B)  Dictyostelium discoideum. 
C)  Chaos carolinense. 
D)  Chlamydomonas. 
E)  Physarum polycephalum. 
A)  Entamoeba histolytica. 
B)  Dictyostelium discoideum. 
C)  Chaos carolinense. 
D)  Chlamydomonas. 
E)  Physarum polycephalum.

Exam 26: Protists

Members of which group are one of the most important producers in marine ecosystems, although sometimes they form blooms known as red tides?

Late blight of potatoes that caused the Irish potato famine is caused by members of the genus __________.

Most protists are:

Figure 26-2 Use the figure to answer the corresponding question(s). -The outcome of the process illustrated in Figure 26-2 is:

Who am I? I am characterized by having a test and axopods.

Backpackers' diarrhea, a common infection among campers and hikers, is caused by drinking untreated water.Consequently, backpacker's diarrhea is due most likely to __________ in the water.

Ancestors of __________ may have possessed mitochondria which were lost or reduced during evolutionay history.

The __________ are excavates that lack functional mitochondria and Golgi.

Which group of algae are a commercial source of agar and carrageenan?

Figure 26-1 Use the figure to answer the corresponding question(s). -Individuals in this group often have intracellular shells of interlocking plates.

Members of the __________ are thought to have given rise to plants.

According to the serial endosymbiosis hypothesis, the ancestors of mitochondria are thought to be purple bacteria. ____________________

The protist that causes malaria belongs to the genus Macrocystis. ___________________

Coralline forms of members of this group are ecologically important in the formation of coral reefs.

_______ are characterized by having a micronucleus and a macronucleus.

You find a protist that has a single flagellum surrounded by a collar of microvilli.You correctly conclude that this organism is:

Name the two main clades of Rhizaria, then list one way of distinguishing one of those clades from the other.

MATCHING Match the supergroup with the representative clade. a.Rhizarians d.Archaeplastids b.Unikonts e.Chromalveolates c.Excavates -Forams and actinopods

You find a unicellular organism that forms lobe-like pseudopodia.When you expose the cells to cAMP, they aggregate into a slug like structure.Based on this information, you correctly conclude that this organism is:

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna: the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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