Question 1

A haplontic life cycle includes _______ individuals that form gametes.

Accepted Answer

A)  multicellular haploid 
B)  multicellular diploid 
C)  unicellular haploid 
D)  unicellular diploid 
E)  None of the above 
A)  multicellular haploid 
B)  multicellular diploid 
C)  unicellular haploid 
D)  unicellular diploid 
E)  None of the above A

Question 2

Which of the following groups of protists secretes an external "shell" of silica (silicon dioxide)?

Accepted Answer

A)  Paramecium 
B)  Diatoms 
C)  Red algae 
D)  Euglenids 
E)  Amoebozoans 
A)  Paramecium 
B)  Diatoms 
C)  Red algae 
D)  Euglenids 
E)  Amoebozoans B

Question 3

Use the following to answer questions:
Refer to the diagram below, showing alternation of generations.  
-Which is the haploid generation, A or B?

Accepted Answer

A

Question 4

Which of the following organisms are not considered microbial eukaryotes?

Accepted Answer

A)  Diatoms 
B)  Algae 
C)  Slime molds 
D)  Sponges 
E)  Giant kelp 
A)  Diatoms 
B)  Algae 
C)  Slime molds 
D)  Sponges 
E)  Giant kelp

Question 5

Which statement about the chlorophytes is not true?

Accepted Answer

A)  They use the same photosynthetic pigments as do land plants. 
B)  Some are unicellular. 
C)  Some are multicellular. 
D)  All are microscopic in size. 
E)  They display a great diversity of life cycles. 
A)  They use the same photosynthetic pigments as do land plants. 
B)  Some are unicellular. 
C)  Some are multicellular. 
D)  All are microscopic in size. 
E)  They display a great diversity of life cycles.

Question 6

The evolutionary relationship among the five major groups of protists is

Accepted Answer

A)  uncertain, or at most weakly supported. 
B)  strongly supported by morphological data. 
C)  strongly supported by genomic data. 
D)  Both b and c 
E)  None of the above 
A)  uncertain, or at most weakly supported. 
B)  strongly supported by morphological data. 
C)  strongly supported by genomic data. 
D)  Both b and c 
E)  None of the above

Question 7

The _______ are marine microbial eukaryotes that secrete a glassy endoskeleton.

Accepted Answer

A)  algae 
B)  protozoa 
C)  radiolarians 
D)  flagellates 
E)  dinoflagellates 
A)  algae 
B)  protozoa 
C)  radiolarians 
D)  flagellates 
E)  dinoflagellates

Question 8

The ciliates

Accepted Answer

A)  move by means of short flagella. 
B)  use amoeboid movement. 
C)  include Plasmodium, the agent of malaria. 
D)  possess both a macronucleus and micronuclei. 
E)  are autotrophic. 
A)  move by means of short flagella. 
B)  use amoeboid movement. 
C)  include Plasmodium, the agent of malaria. 
D)  possess both a macronucleus and micronuclei. 
E)  are autotrophic.

Question 9

Which of the following statements about foraminiferans is false?

Accepted Answer

A)  Foraminiferans can form shells that are composed of silica. 
B)  Limestone deposits are the shells of ancient foraminiferans. 
C)  The sand of some beaches is made up of the shells of foraminiferans. 
D)  Foraminiferan fossils are useful in the classification of sedimentary rocks. 
E)  Foraminiferan fossils are useful in oil prospecting. 
A)  Foraminiferans can form shells that are composed of silica. 
B)  Limestone deposits are the shells of ancient foraminiferans. 
C)  The sand of some beaches is made up of the shells of foraminiferans. 
D)  Foraminiferan fossils are useful in the classification of sedimentary rocks. 
E)  Foraminiferan fossils are useful in oil prospecting.

Question 10

Some oomycetes are coenocytes, which means that

Accepted Answer

A)  they have a single nucleus enclosed in a single plasma membrane. 
B)  their cytoplasm is pigmented. 
C)  they have multiple nuclei enclosed in a single plasma membrane. 
D)  their reproductive cells have no flagella. 
E)  they have multiple flagella on their nonreproductive cells. 
A)  they have a single nucleus enclosed in a single plasma membrane. 
B)  their cytoplasm is pigmented. 
C)  they have multiple nuclei enclosed in a single plasma membrane. 
D)  their reproductive cells have no flagella. 
E)  they have multiple flagella on their nonreproductive cells.

Question 11

Which of the following structures is not associated with movement or feeding in Paramecium?

Accepted Answer

A)  Food vacuole 
B)  Oral groove 
C)  Cilium 
D)  Pseudopod 
E)  Both b and c 
A)  Food vacuole 
B)  Oral groove 
C)  Cilium 
D)  Pseudopod 
E)  Both b and c

Question 12

Differentiate between asexual and sexual reproduction. Select one mode of microbial eukaryote sexual reproduction and explain it fully.

Accepted Answer

Asexual reproduction results in clones o

Question 13

Which of the following features is not a characteristic of the plasmodium of an acellular slime mold?

Accepted Answer

A)  Many nuclei enclosed in a single plasma membrane (coenocyte) 
B)  Haploid nuclei 
C)  Cytoplasmic streaming 
D)  Mitosis without cytokinesis 
E)  Formation of a sclerotium when conditions are unfavorable 
A)  Many nuclei enclosed in a single plasma membrane (coenocyte) 
B)  Haploid nuclei 
C)  Cytoplasmic streaming 
D)  Mitosis without cytokinesis 
E)  Formation of a sclerotium when conditions are unfavorable

Question 14

Draw the phylogeny of the three domains of life and add the various lineages of protists to it. Then add the plants, animals, and fungi.

Accepted Answer

This takes practice! Begin by drawing ju

Question 15

_______ are marine microbial eukaryotes that secrete shells of calcium carbonate. These microbial eukaryotes are valuable in the geological dating of sedimentary rocks and in oil prospecting.

Accepted Answer

The answer of _______ are marine microbial eukaryotes that secrete...

Question 16

Which of the following processes is not part of conjugation in Paramecium?

Accepted Answer

A)  Meiosis 
B)  Mitosis 
C)  Cytokinesis 
D)  Fusion of haploid nuclei 
E)  Breakdown of some micronuclei 
A)  Meiosis 
B)  Mitosis 
C)  Cytokinesis 
D)  Fusion of haploid nuclei 
E)  Breakdown of some micronuclei

Question 17

Phytoplankton are members of plankton that perform _______.

Accepted Answer

The answer of Phytoplankton are members of plankton that perform...

Question 18

Which of the following clades is not included in the Plantae?

Accepted Answer

A)  Brown algae 
B)  Red algae 
C)  Glaucophytes 
D)  Charophytes 
E)  Chlorophytes 
A)  Brown algae 
B)  Red algae 
C)  Glaucophytes 
D)  Charophytes 
E)  Chlorophytes

Question 19

Apicomplexans

Accepted Answer

A)  are all parasites. 
B)  have complex life cycles. 
C)  lack contractile vacuoles. 
D)  have a chloroplast. 
E)  All of the above 
A)  are all parasites. 
B)  have complex life cycles. 
C)  lack contractile vacuoles. 
D)  have a chloroplast. 
E)  All of the above

Question 20

Algal life cycles show extreme variation. Members of only one group, the _______, do not have flagellated motile cells in at least one of the stages.

Accepted Answer

A)  alveolates 
B)  red algae 
C)  euglenozoans 
D)  diplomonads 
E)  ciliates 
A)  alveolates 
B)  red algae 
C)  euglenozoans 
D)  diplomonads 
E)  ciliates

Exam 27: The Origin and Diversification of Eukaryotes

A haplontic life cycle includes _______ individuals that form gametes.

Which of the following groups of protists secretes an external "shell" of silica (silicon dioxide)?

Use the following to answer questions: Refer to the diagram below, showing alternation of generations. -Which is the haploid generation, A or B?

Which of the following organisms are not considered microbial eukaryotes?

Which statement about the chlorophytes is not true?

The evolutionary relationship among the five major groups of protists is

The _______ are marine microbial eukaryotes that secrete a glassy endoskeleton.

The ciliates

Which of the following statements about foraminiferans is false?

Some oomycetes are coenocytes, which means that

Which of the following structures is not associated with movement or feeding in Paramecium?

Differentiate between asexual and sexual reproduction. Select one mode of microbial eukaryote sexual reproduction and explain it fully.

Which of the following features is not a characteristic of the plasmodium of an acellular slime mold?

Draw the phylogeny of the three domains of life and add the various lineages of protists to it. Then add the plants, animals, and fungi.

_______ are marine microbial eukaryotes that secrete shells of calcium carbonate. These microbial eukaryotes are valuable in the geological dating of sedimentary rocks and in oil prospecting.

Which of the following processes is not part of conjugation in Paramecium?

Phytoplankton are members of plankton that perform _______.

Which of the following clades is not included in the Plantae?

Apicomplexans

Algal life cycles show extreme variation. Members of only one group, the _______, do not have flagellated motile cells in at least one of the stages.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

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