BIO 200 Final Exam- UMaine Questions
with Correct Answers
Lamprey are Vertebrates but not Gnathostomes because they...
a. have keratinous teeth.
b. have filter-feeding larvae.
c. lack vertebrae of calcified bone.
d. are parasitic.
e. are jawless. - ANSWER-e. are jawless.
Each of the answers below gives a different group of animals (in CAPS), a
characteristic that at least one member of the group has (in italics), and the
evolutionary history of that characteristic (derived or ancestral in parentheses).
Choose the answer that correctly matches the evolutionary history of the character
for that group.
a. PRIMATES --> hairless faces (ancestral)
b. BILATERIA --> bilaterally symmetrical body plan (ancestral)
c. ANIMALIA --> HOX genes (derived)
d. EUMETAZOANS --> ecdysis (ancestral)
e. EUMETAZOANS --> tissues (derived) - ANSWER-b. BILATERIA --> bilaterally
symmetrical body plan (ancestral)
A marine biologist discovers a new deep-sea organism. Which of the following sets
of characteristics would tell you that the organism MUST be an animal. It is a/n...
a. multi-cellular, eukaryotic organism with chitin
b. multi-cellular, eukaryotic, diploid organism
c. organism with tissues and 2 primary embryonic layers
d. haploid organism with HOX genes that produces gametes
e. unicellular organism with collagen - ANSWER-c. organism with tissues and 2
primary embryonic layers
In animal development, which of the following processes results in the formation of
an endoderm and ectoderm layer?
a. Cleavage
b. Gastrulation
c. Fertilization
d. Mesodermal formation
e. The "eight-cell" stage - ANSWER-b. Gastrulation
Choose the correct matching of animal groups with their body symmetry.
a. Porifera = radial; Cnidaria = radial; Ecdysozoa = bilaterial
b. Porifera = assymetrical; Ctenophore = bilateral; Ecdysozoa = radial
c. Porifera = assymetrical; Lophotrochozoa = radial; Ecdysozoa = bilaterial
d. Porifera = assymetrical; Lophotrochozoa = bilaterial; Ecdysozoa = bilaterial
,e. Ctenophore = assymetrical; Cnidaria = radial; Ecdysozoa = bilaterial - ANSWER-
d. Porifera = assymetrical; Lophotrochozoa = bilaterial; Ecdysozoa = bilaterial
The classification of the common housefly is:
Eukarya-Animalia-Arthropoda-Insecta-Diptera-Muscidae-Musca-domestica
While the classification of one bumblebee is:
Eukarya-Animalia-Arthropoda-Insecta-Hymenoptera-Apidae-Bombus-pensylvanicus
These two organisms are in different...
a. Domains.
b. Orders.
c. Classes.
d. Phyla.
e. Families - ANSWER-b. Orders.
Which of the following is true of the generic phylogenetic tree depicted below, where
the right end depicts most recent time.
a. Each node represents an actual time in history.
b. Group A and C are most closely related.
c. The common ancestor at the rightmost node existed more recently than the one to
its left.
d. Group C is likely the common ancestor of Groups A and B.
e. A and B represent one species. - ANSWER-c. The common ancestor at the
rightmost node existed more recently than the one to its left.
The traditional three- or five-Kingdom phylogenetic classifications of life has been
modified with a three-Domain system because...
a. unicellular organisms are either prokaryotic or eukaryotic.
b. Fungi, Animals, and Plants share a recent common ancestor.
c. Animals are more closely related to Archaea than to Plants.
d. There is no single common ancestor to life on the planet.
e. multicellular organisms are all eukaryotic. - ANSWER-a. unicellular organisms are
either prokaryotic or eukaryotic.
The first genes on earth were probably...
a. DNA produced by reverse transcriptase from DNA.
b. DNA molecules whose information was converted into mRNA and later translated
into polypeptides.
c. auto-catalytic RNA molecules.
d. polypeptides located inside protobionts. - ANSWER-c. auto-catalytic RNA
molecules.
Prokaryotes such as Bacteria...
a. reproduce asexually, therefore genetic variation is not possible.
b. divide by Binary Fission.
c. store their genetic material within a nucleus.
d. can live for a very long time because they do not divide by Mitosis.
e. are all heterotrophs. - ANSWER-b. divide by Binary Fission.
, Ampicillin is an antibiotic that inhibits cross-link formation in peptidoglycan, resulting
in death of the affected cell. Which of the following cell types might be most
vulnerable to ampicillin?
a. Archaean cells
b. Eukaryotic cells
c. Animal cells
d. Fungal cells
e. Bacterial cells - ANSWER-e. Bacterial cells
Which of the following characteristics are found in some organisms of all three
Domains?
a. Membranes containing branched hydrocarbon chains
b. Cell walls made of chitin
c. Metabolic pathways allowing synthesis of organic molecules from precursors using
energy from sunlight or inorganic compounds
d. Cell division strategies that result in gametes being produced - ANSWER-c.
Metabolic pathways allowing synthesis of organic molecules from precursors using
energy from sunlight or inorganic compounds
Which of the following might be an ecological role played by Prokaryotes?
a. Causing disease in eukaryotes.
b. Recycling organic material.
c. Metabolizing material in extreme environments.
d. Adding methane to the environment.
e. Primary producers in terrestrial ecosystems. - ANSWER-b. Recycling organic
material.
Select the term that DOES NOT apply to Fungi.
a. vascular tissues
b. heterotroph
c. dikaryon
d. chitin
e. meiosis - ANSWER-a. vascular tissues
Lichens and plant roots both involve associations with fungi because...
a. they cannot hold onto soil without the fungal partner.
b. without fungal chloroplasts, they would not have energy.
c. the fungus provides another tissue layer.
d. plasmogamy benefits the non-fungal partner.
e. they are mutually beneficial (exchanging water and minerals for carbohydrates). -
ANSWER-e. they are mutually beneficial (exchanging water and minerals for
carbohydrates).
The sexual reproduction cycle of many fungi is unique relative to other multicellular
eukaryotes because in fungi...
a. both male and female gametes are produced in the same individual.
b. plasmogamy can last a very long time before karyogamy and meiosis occur.
c. all the gametes start off diploid.
d. the gametes are flagellated and remain free-living unicellular organisms for an
extended period of time.
with Correct Answers
Lamprey are Vertebrates but not Gnathostomes because they...
a. have keratinous teeth.
b. have filter-feeding larvae.
c. lack vertebrae of calcified bone.
d. are parasitic.
e. are jawless. - ANSWER-e. are jawless.
Each of the answers below gives a different group of animals (in CAPS), a
characteristic that at least one member of the group has (in italics), and the
evolutionary history of that characteristic (derived or ancestral in parentheses).
Choose the answer that correctly matches the evolutionary history of the character
for that group.
a. PRIMATES --> hairless faces (ancestral)
b. BILATERIA --> bilaterally symmetrical body plan (ancestral)
c. ANIMALIA --> HOX genes (derived)
d. EUMETAZOANS --> ecdysis (ancestral)
e. EUMETAZOANS --> tissues (derived) - ANSWER-b. BILATERIA --> bilaterally
symmetrical body plan (ancestral)
A marine biologist discovers a new deep-sea organism. Which of the following sets
of characteristics would tell you that the organism MUST be an animal. It is a/n...
a. multi-cellular, eukaryotic organism with chitin
b. multi-cellular, eukaryotic, diploid organism
c. organism with tissues and 2 primary embryonic layers
d. haploid organism with HOX genes that produces gametes
e. unicellular organism with collagen - ANSWER-c. organism with tissues and 2
primary embryonic layers
In animal development, which of the following processes results in the formation of
an endoderm and ectoderm layer?
a. Cleavage
b. Gastrulation
c. Fertilization
d. Mesodermal formation
e. The "eight-cell" stage - ANSWER-b. Gastrulation
Choose the correct matching of animal groups with their body symmetry.
a. Porifera = radial; Cnidaria = radial; Ecdysozoa = bilaterial
b. Porifera = assymetrical; Ctenophore = bilateral; Ecdysozoa = radial
c. Porifera = assymetrical; Lophotrochozoa = radial; Ecdysozoa = bilaterial
d. Porifera = assymetrical; Lophotrochozoa = bilaterial; Ecdysozoa = bilaterial
,e. Ctenophore = assymetrical; Cnidaria = radial; Ecdysozoa = bilaterial - ANSWER-
d. Porifera = assymetrical; Lophotrochozoa = bilaterial; Ecdysozoa = bilaterial
The classification of the common housefly is:
Eukarya-Animalia-Arthropoda-Insecta-Diptera-Muscidae-Musca-domestica
While the classification of one bumblebee is:
Eukarya-Animalia-Arthropoda-Insecta-Hymenoptera-Apidae-Bombus-pensylvanicus
These two organisms are in different...
a. Domains.
b. Orders.
c. Classes.
d. Phyla.
e. Families - ANSWER-b. Orders.
Which of the following is true of the generic phylogenetic tree depicted below, where
the right end depicts most recent time.
a. Each node represents an actual time in history.
b. Group A and C are most closely related.
c. The common ancestor at the rightmost node existed more recently than the one to
its left.
d. Group C is likely the common ancestor of Groups A and B.
e. A and B represent one species. - ANSWER-c. The common ancestor at the
rightmost node existed more recently than the one to its left.
The traditional three- or five-Kingdom phylogenetic classifications of life has been
modified with a three-Domain system because...
a. unicellular organisms are either prokaryotic or eukaryotic.
b. Fungi, Animals, and Plants share a recent common ancestor.
c. Animals are more closely related to Archaea than to Plants.
d. There is no single common ancestor to life on the planet.
e. multicellular organisms are all eukaryotic. - ANSWER-a. unicellular organisms are
either prokaryotic or eukaryotic.
The first genes on earth were probably...
a. DNA produced by reverse transcriptase from DNA.
b. DNA molecules whose information was converted into mRNA and later translated
into polypeptides.
c. auto-catalytic RNA molecules.
d. polypeptides located inside protobionts. - ANSWER-c. auto-catalytic RNA
molecules.
Prokaryotes such as Bacteria...
a. reproduce asexually, therefore genetic variation is not possible.
b. divide by Binary Fission.
c. store their genetic material within a nucleus.
d. can live for a very long time because they do not divide by Mitosis.
e. are all heterotrophs. - ANSWER-b. divide by Binary Fission.
, Ampicillin is an antibiotic that inhibits cross-link formation in peptidoglycan, resulting
in death of the affected cell. Which of the following cell types might be most
vulnerable to ampicillin?
a. Archaean cells
b. Eukaryotic cells
c. Animal cells
d. Fungal cells
e. Bacterial cells - ANSWER-e. Bacterial cells
Which of the following characteristics are found in some organisms of all three
Domains?
a. Membranes containing branched hydrocarbon chains
b. Cell walls made of chitin
c. Metabolic pathways allowing synthesis of organic molecules from precursors using
energy from sunlight or inorganic compounds
d. Cell division strategies that result in gametes being produced - ANSWER-c.
Metabolic pathways allowing synthesis of organic molecules from precursors using
energy from sunlight or inorganic compounds
Which of the following might be an ecological role played by Prokaryotes?
a. Causing disease in eukaryotes.
b. Recycling organic material.
c. Metabolizing material in extreme environments.
d. Adding methane to the environment.
e. Primary producers in terrestrial ecosystems. - ANSWER-b. Recycling organic
material.
Select the term that DOES NOT apply to Fungi.
a. vascular tissues
b. heterotroph
c. dikaryon
d. chitin
e. meiosis - ANSWER-a. vascular tissues
Lichens and plant roots both involve associations with fungi because...
a. they cannot hold onto soil without the fungal partner.
b. without fungal chloroplasts, they would not have energy.
c. the fungus provides another tissue layer.
d. plasmogamy benefits the non-fungal partner.
e. they are mutually beneficial (exchanging water and minerals for carbohydrates). -
ANSWER-e. they are mutually beneficial (exchanging water and minerals for
carbohydrates).
The sexual reproduction cycle of many fungi is unique relative to other multicellular
eukaryotes because in fungi...
a. both male and female gametes are produced in the same individual.
b. plasmogamy can last a very long time before karyogamy and meiosis occur.
c. all the gametes start off diploid.
d. the gametes are flagellated and remain free-living unicellular organisms for an
extended period of time.
