Question 1

An example of an excavate that has a pellicle is Euglena . 
__________________

Accepted Answer

A) True 
 B)False

Question 2

Figure 26-2   What is the outcome of the process illustrated in the accompanying figure.?

Accepted Answer

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

Question 3

The surface of a Paramecium is covered with thousands of short, hair-like ____.

Accepted Answer

A)  plasmadesmata 
B)  pseudopods 
C)  trichomes 
D)  flagella 
E)  cilia 
A)  plasmadesmata 
B)  pseudopods 
C)  trichomes 
D)  flagella 
E)  cilia

Question 4

Land plants are thought to have arisen most directly from a(n) red algal ancestor. 
___________________

Accepted Answer

A) True 
 B)False

Question 5

Which group of protists are unicellular, biflagellate stramenopiles that forms a significant portion of the nanoplankton?

Accepted Answer

A)  ciliates 
B)  red algae 
C)  golden algae 
D)  foraminifera 
E)  brown algae 
A)  ciliates 
B)  red algae 
C)  golden algae 
D)  foraminifera 
E)  brown algae

Question 6

Which protist clade (supergroup) is characterized by their greatly modified mitochondria?

Accepted Answer

A)  excavates 
B)  unikonts 
C)  rhizarians 
D)  archaeplastids 
E)  chromalvolates 
A)  excavates 
B)  unikonts 
C)  rhizarians 
D)  archaeplastids 
E)  chromalvolates

Question 7

Given the diversity in protist ultrastructure and molecular data, biologists regard the protists as a(n) ____ group, meaning that some are descendants of a common eukaryote ancestor.

Accepted Answer

A)  monophyletic 
B)  paraphyletic 
C)  polyphyletic 
D)  homoplastic 
E)  homologous 
A)  monophyletic 
B)  paraphyletic 
C)  polyphyletic 
D)  homoplastic 
E)  homologous

Question 8

Which protist group are characterized by a multinucleate amoeboid-like feeding form?

Accepted Answer

A)  plasmodial slime molds 
B)  cellular slime molds 
C)  water molds 
D)  amoebozoa 
E)  brown algae 
A)  plasmodial slime molds 
B)  cellular slime molds 
C)  water molds 
D)  amoebozoa 
E)  brown algae

Question 9

Which protist group contains the organism Trypanosoma, a colorless parasite that can cause African sleeping sickness?

Accepted Answer

A)  unikonts 
B)  excavates 
C)  rhizarians 
D)  archaeplastids 
E)  chromalveolates 
A)  unikonts 
B)  excavates 
C)  rhizarians 
D)  archaeplastids 
E)  chromalveolates

Question 10

Identify the modes of nutrition found in members of the protists, and include two examples of each.

Accepted Answer

Autotrophs (photosynthesis: Ch

Question 11

In primary endosymbiosis, an ancient eukaryotic cell engulfed a(n) ____, which survived and evolved into a chloroplast.

Accepted Answer

A)  algae 
B)  virus 
C)  ciliate 
D)  euglenoid 
E)  cyanobacterium 
A)  algae 
B)  virus 
C)  ciliate 
D)  euglenoid 
E)  cyanobacterium

Question 12

Which eukaryotic organelles likely arose from symbiotic relationships between larger cells and bacteria?

Accepted Answer

A)  nuclei 
B)  endoplasmic reticulums 
C)  vacuoles and chloroplasts 
D)  mitochondria and chloroplasts 
E)  mitochondria and Golgi complexes 
A)  nuclei 
B)  endoplasmic reticulums 
C)  vacuoles and chloroplasts 
D)  mitochondria and chloroplasts 
E)  mitochondria and Golgi complexes

Question 13

Foraminiferans are Rhizarians . 
______________

Accepted Answer

A) True 
 B)False

Question 14

Which algal group contains individuals that are typically unicellular and form siliceous shells?

Accepted Answer

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

Question 15

Which is an anaerobic excavate that is an endosymbiont of animals?

Accepted Answer

A)  diatom 
B)  euglenoid 
C)  parabasilid 
D)  actinopod 
E)  dinoflagellate 
A)  diatom 
B)  euglenoid 
C)  parabasilid 
D)  actinopod 
E)  dinoflagellate

Question 16

Figure 26-2   Refer to the accompanying figure. What is the process occurring in the cells labeled as 3 in the sequence?

Accepted Answer

A)  mitosis 
B)  conjugation 
C)  the first meiotic division 
D)  exchange of micronucleus 
E)  the second meiotic division 
A)  mitosis 
B)  conjugation 
C)  the first meiotic division 
D)  exchange of micronucleus 
E)  the second meiotic division

Question 17

The body of a water mold is called a(n) mycelium . 
_____________________

Accepted Answer

A) True 
 B)False

Question 18

Of the following, which group exhibits a diverse morphology, forming unicells, filaments, and sheets?

Accepted Answer

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

Question 19

What commercial product is derived from the processing of red algae?

Accepted Answer

A)  milk 
B)  sushi 
C)  lipstick 
D)  ice cream 
E)  carrageenan 
A)  milk 
B)  sushi 
C)  lipstick 
D)  ice cream 
E)  carrageenan

Question 20

Members of the alveolates are characterized by the presence of:

Accepted Answer

A)  two or more flagella 
B)  chloroplast pigments 
C)  crystalline rod in the flagella 
D)  contractile vacuoles surrounded by a pellicle. 
E)  flattened vesicles under the plasma membrane. 
A)  two or more flagella 
B)  chloroplast pigments 
C)  crystalline rod in the flagella 
D)  contractile vacuoles surrounded by a pellicle. 
E)  flattened vesicles under the plasma membrane.

Exam 26: Protists

An example of an excavate that has a pellicle is Euglena . __________________

Figure 26-2 What is the outcome of the process illustrated in the accompanying figure.?

The surface of a Paramecium is covered with thousands of short, hair-like ____.

Land plants are thought to have arisen most directly from a(n) red algal ancestor. ___________________

Which group of protists are unicellular, biflagellate stramenopiles that forms a significant portion of the nanoplankton?

Which protist clade (supergroup) is characterized by their greatly modified mitochondria?

Given the diversity in protist ultrastructure and molecular data, biologists regard the protists as a(n) ____ group, meaning that some are descendants of a common eukaryote ancestor.

Which protist group are characterized by a multinucleate amoeboid-like feeding form?

Which protist group contains the organism Trypanosoma, a colorless parasite that can cause African sleeping sickness?

Identify the modes of nutrition found in members of the protists, and include two examples of each.

In primary endosymbiosis, an ancient eukaryotic cell engulfed a(n) ____, which survived and evolved into a chloroplast.

Which eukaryotic organelles likely arose from symbiotic relationships between larger cells and bacteria?

Foraminiferans are Rhizarians . ______________

Which algal group contains individuals that are typically unicellular and form siliceous shells?

Which is an anaerobic excavate that is an endosymbiont of animals?

Figure 26-2 Refer to the accompanying figure. What is the process occurring in the cells labeled as 3 in the sequence?

The body of a water mold is called a(n) mycelium . _____________________

Of the following, which group exhibits a diverse morphology, forming unicells, filaments, and sheets?

What commercial product is derived from the processing of red algae?

Members of the alveolates are characterized by the presence of:

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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