Question 1

Which statement about turtles is false?

Accepted Answer

A)  The dorsal shell is a modification of the ribs. 
B)  The shell is shed (molted) as the turtle grows. 
C)  The pectoral girdles are inside the ribs. 
D)  The shell is composed of dorsal and ventral plates. 
E)  The head and limbs can be withdrawn into the shell. 
A)  The dorsal shell is a modification of the ribs. 
B)  The shell is shed (molted) as the turtle grows. 
C)  The pectoral girdles are inside the ribs. 
D)  The shell is composed of dorsal and ventral plates. 
E)  The head and limbs can be withdrawn into the shell.

Question 2

Marsupials differ from eutherians in that

Accepted Answer

A)  marsupials do not have a placenta, whereas eutherians do. 
B)  some marsupial species can glide but none can fly, whereas some eutherian species can fly. 
C)  there are more species of marsupials than there are of eutherians. 
D)  the marsupials are more widespread than eutherians are. 
E)  marsupials are more developed at birth than eutherians are. 
A)  marsupials do not have a placenta, whereas eutherians do. 
B)  some marsupial species can glide but none can fly, whereas some eutherian species can fly. 
C)  there are more species of marsupials than there are of eutherians. 
D)  the marsupials are more widespread than eutherians are. 
E)  marsupials are more developed at birth than eutherians are.

Question 3

The ancestral deuterostome possessed external gills, similar to pharyngeal slits seen in extant deuterostomes.Many adult chordates, such as tunicates (sea squirts) do not possess pharyngeal slits.Why would tunicates (sea squirts) be considered similar to the ancestor of all chordates?

Accepted Answer

A)  The body plan of adult tunicates parallels that of chordates. 
B)  Tunicate larvae possess the synapomorphies of adult chordates. 
C)  Tunicates have a lophophore-style mouth. 
D)  Tunicate larvae are primitive in all of their features. 
E)  Tunicate adults are very similar to the ancestors of cephalochordates and vertebrates. 
A)  The body plan of adult tunicates parallels that of chordates. 
B)  Tunicate larvae possess the synapomorphies of adult chordates. 
C)  Tunicates have a lophophore-style mouth. 
D)  Tunicate larvae are primitive in all of their features. 
E)  Tunicate adults are very similar to the ancestors of cephalochordates and vertebrates.

Question 4

The _______ include New World monkeys, Old World monkeys, apes, and humans.

Accepted Answer

The answer of The _______ include New World monkeys, Old...

Question 5

Which group of organisms corresponds with the evolutionary innovation of the amniote egg?

Accepted Answer

A)  Amphibians 
B)  Birds 
C)  Ray-finned fishes 
D)  Chondrichthyans 
E)  Early reptiles 
A)  Amphibians 
B)  Birds 
C)  Ray-finned fishes 
D)  Chondrichthyans 
E)  Early reptiles

Question 6

What three traits evolved in primates that led to their evolutionary success? Which ones seem to have had the greatest impact on hominid lines?

Accepted Answer

Primates evolved opposable thumbs, biped

Question 7

Which statement about marsupials is false?

Accepted Answer

A)  The largest living marsupials are the kangaroos of Australia, which can weigh up to 90 kilograms. 
B)  The American opossum is a marsupial. 
C)  Some marsupials are able to fly with flapping flight of wings. 
D)  Some arboreal (tree-dwelling) marsupials are gliders. 
E)  Marsupial young are born tiny with well-developed forelimbs. 
A)  The largest living marsupials are the kangaroos of Australia, which can weigh up to 90 kilograms. 
B)  The American opossum is a marsupial. 
C)  Some marsupials are able to fly with flapping flight of wings. 
D)  Some arboreal (tree-dwelling) marsupials are gliders. 
E)  Marsupial young are born tiny with well-developed forelimbs.

Question 8

Which statement is true regarding the amphisbaenians?

Accepted Answer

A)  Their eggs cannot survive out of water. 
B)  They have thin, permeable skin. 
C)  They respire through lungs. 
D)  They excrete dilute urine. 
E)  They exhibit neoteny. 
A)  Their eggs cannot survive out of water. 
B)  They have thin, permeable skin. 
C)  They respire through lungs. 
D)  They excrete dilute urine. 
E)  They exhibit neoteny.

Question 9

If an animal exhibits radial cleavage, it may not necessarily be classified as a ______ but would still be classified as a bilaterian.

Accepted Answer

The answer of If an animal exhibits radial cleavage, it...

Question 10

Which statement about anurans is false?

Accepted Answer

A)  Some have tough skins as an adaptation to very moist environments. 
B)  Some species are completely aquatic as adults. 
C)  Some have adaptations for living in very dry deserts. 
D)  Some live in moist, arboreal environments. 
E)  The pelvic region is modified for leaping, hopping, or kicking the hind legs in water. 
A)  Some have tough skins as an adaptation to very moist environments. 
B)  Some species are completely aquatic as adults. 
C)  Some have adaptations for living in very dry deserts. 
D)  Some live in moist, arboreal environments. 
E)  The pelvic region is modified for leaping, hopping, or kicking the hind legs in water.

Question 11

Tools used for obtaining food were found in association with fossils of Homo habilis.The ability to manipulate objects and carry them while walking could be attributed to _______ locomotion.

Accepted Answer

The answer of Tools used for obtaining food were found...

Question 12

Refer to the figure.   Spider monkeys of Central America and mandrils, found in Africa,

Accepted Answer

A)  evolved from a common ancestor while these land masses were still close to each other. 
B)  share a common ancestor with orangutans. 
C)  evolved independently from a wet-nosed ancestor. 
D)  exhibit convergent evolution. 
E)  are the closest primate ancestors of humans. 
A)  evolved from a common ancestor while these land masses were still close to each other. 
B)  share a common ancestor with orangutans. 
C)  evolved independently from a wet-nosed ancestor. 
D)  exhibit convergent evolution. 
E)  are the closest primate ancestors of humans.

Question 13

The ray-finned fishes regulate their buoyancy by means of an organ called the _______.

Accepted Answer

The answer of The ray-finned fishes regulate their buoyancy by...

Question 14

Which of the following is not a characteristic of deuterostomes?

Accepted Answer

A)  Radial cleavage 
B)  Formation of the mouth on the end of embryos opposite the blastopore 
C)  Formation of the anus from the blastopore 
D)  Coelom that develops from mesodermal outpocketing in the gastrula 
E)  Coelom that develops from splitting of the mesoderm 
A)  Radial cleavage 
B)  Formation of the mouth on the end of embryos opposite the blastopore 
C)  Formation of the anus from the blastopore 
D)  Coelom that develops from mesodermal outpocketing in the gastrula 
E)  Coelom that develops from splitting of the mesoderm

Question 15

Refer to the figure.   Which statement about these two animals is false?

Accepted Answer

A)  Both lay eggs. 
B)  They are prototherians. 
C)  Both have fur. 
D)  One is a marsupial. 
E)  One is a duck-billed platypus. 
A)  Both lay eggs. 
B)  They are prototherians. 
C)  Both have fur. 
D)  One is a marsupial. 
E)  One is a duck-billed platypus.

Question 16

Which structure in an amniote egg allows the embryo to attain a relatively advanced state of development before it is born?

Accepted Answer

A)  The amnion 
B)  The chorion 
C)  The shell 
D)  The yolk 
E)  The allantois 
A)  The amnion 
B)  The chorion 
C)  The shell 
D)  The yolk 
E)  The allantois

Question 17

Which of the following echinoderms does not use tube feet for locomotion?

Accepted Answer

A)  Sea urchins 
B)  Sea cucumbers 
C)  Sea lilies 
D)  Sea stars 
E)  Brittle stars 
A)  Sea urchins 
B)  Sea cucumbers 
C)  Sea lilies 
D)  Sea stars 
E)  Brittle stars

Question 18

The early fishes that evolved jaws belong to the group called _______, which means "jawed mouth."

Accepted Answer

The answer of The early fishes that evolved jaws belong...

Question 19

Refer to the figure.   What modification in jaw structure occurred in early jawed fishes that was not found in jawless fishes at that time?

Accepted Answer

A)  A set of gill arches was modified into supports for the jaws. 
B)  Gill arches were modified to form jaws. 
C)  Teeth developed on the jaws. 
D)  The anterior part of the skull was modified to form jaws. 
E)  Teeth formed from posterior gill arches. 
A)  A set of gill arches was modified into supports for the jaws. 
B)  Gill arches were modified to form jaws. 
C)  Teeth developed on the jaws. 
D)  The anterior part of the skull was modified to form jaws. 
E)  Teeth formed from posterior gill arches.

Question 20

Refer to the figure showing several species of amphibians.   How are the amphibians shown in the figure similar? How do they differ? Address habitat and life cycle in your answer.

Accepted Answer

All three animals exhibit the amphibian

Exam 32: Deuterostome Animals

Which statement about turtles is false?

Marsupials differ from eutherians in that

The ancestral deuterostome possessed external gills, similar to pharyngeal slits seen in extant deuterostomes.Many adult chordates, such as tunicates (sea squirts) do not possess pharyngeal slits.Why would tunicates (sea squirts) be considered similar to the ancestor of all chordates?

The _______ include New World monkeys, Old World monkeys, apes, and humans.

Which group of organisms corresponds with the evolutionary innovation of the amniote egg?

What three traits evolved in primates that led to their evolutionary success? Which ones seem to have had the greatest impact on hominid lines?

Which statement about marsupials is false?

Which statement is true regarding the amphisbaenians?

If an animal exhibits radial cleavage, it may not necessarily be classified as a ______ but would still be classified as a bilaterian.

Which statement about anurans is false?

Tools used for obtaining food were found in association with fossils of Homo habilis.The ability to manipulate objects and carry them while walking could be attributed to _______ locomotion.

Refer to the figure. Spider monkeys of Central America and mandrils, found in Africa,

The ray-finned fishes regulate their buoyancy by means of an organ called the _______.

Which of the following is not a characteristic of deuterostomes?

Refer to the figure. Which statement about these two animals is false?

Which structure in an amniote egg allows the embryo to attain a relatively advanced state of development before it is born?

Which of the following echinoderms does not use tube feet for locomotion?

The early fishes that evolved jaws belong to the group called _______, which means "jawed mouth."

Refer to the figure. What modification in jaw structure occurred in early jawed fishes that was not found in jawless fishes at that time?

Refer to the figure showing several species of amphibians. How are the amphibians shown in the figure similar? How do they differ? Address habitat and life cycle in your answer.

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 Communication and Multicellularity

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

Recombinant Dna and Biotechnology

Mechanisms of Evolution

Reconstructing and Using Phylogenies

Speciation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

The Evolution and Diversity of Fungi

Animal Origins and the Evolution of Body Plans

Protostome 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, Glia, and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Functions

Musculoskeletal Systems

Gas Exchange

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen Excretion

Animal Behavior

The Physical Environment and Biogeography of Life

Populations

Species Interactions

Communities

Ecosystems

A Changing Biosphere

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