Question 1

Which statement about insect wings is true?

Accepted Answer

A)  The insect wing may have evolved from an ancestral appendage similar to that of modern spiders. 
B)  Development of the insect wing is governed by the expression of a gene that is different from the one that governs the crayfish appendage. 
C)  The pdm gene is expressed in both the wings and legs of insects. 
D)  Development of the insect wing and development of the crayfish thorax are controlled by the pdm gene. 
E)  The pdm gene seems to have appeared only recently in evolution,after the divergence of crustaceans and hexapods. 
A)  The insect wing may have evolved from an ancestral appendage similar to that of modern spiders. 
B)  Development of the insect wing is governed by the expression of a gene that is different from the one that governs the crayfish appendage. 
C)  The pdm gene is expressed in both the wings and legs of insects. 
D)  Development of the insect wing and development of the crayfish thorax are controlled by the pdm gene. 
E)  The pdm gene seems to have appeared only recently in evolution,after the divergence of crustaceans and hexapods.

Question 2

Which statement about the amphibians is true?

Accepted Answer

A)  They were less abundant in the past than they are today. 
B)  Waterproof coverings on their skin allow them to be terrestrial. 
C)  Their eggs are very sensitive to drying. 
D)  Most species are hermaphroditic. 
E)  Living amphibians belong to five sister groups. 
A)  They were less abundant in the past than they are today. 
B)  Waterproof coverings on their skin allow them to be terrestrial. 
C)  Their eggs are very sensitive to drying. 
D)  Most species are hermaphroditic. 
E)  Living amphibians belong to five sister groups.

Question 3

Which feature is not associated with the rotifers?

Accepted Answer

A)  A pseudocoelom 
B)  A complete gut 
C)  Conspicuous feeding organs 
D)  Radial symmetry 
E)  Movement by beating cilia 
A)  A pseudocoelom 
B)  A complete gut 
C)  Conspicuous feeding organs 
D)  Radial symmetry 
E)  Movement by beating cilia

Question 4

The body cavity of coelomate animals develops within the

Accepted Answer

A)  endoderm. 
B)  ectoderm. 
C)  mesoderm. 
D)  pseudocoel. 
E)  mesoglea. 
A)  endoderm. 
B)  ectoderm. 
C)  mesoderm. 
D)  pseudocoel. 
E)  mesoglea.

Question 5

Which feature is an adaptation found in flatworms that is associated with a parasitic lifestyle?

Accepted Answer

A)  Large size 
B)  A highly branched gastrovascular cavity 
C)  An oxygen transport system 
D)  Absorption of nutrients through the body surface 
E)  A mouth with teeth for latching on to its host 
A)  Large size 
B)  A highly branched gastrovascular cavity 
C)  An oxygen transport system 
D)  Absorption of nutrients through the body surface 
E)  A mouth with teeth for latching on to its host

Question 6

Which statement about the tracheal system in insects is true?

Accepted Answer

A)  Tracheae are used for water transport. 
B)  Tracheae penetrate virtually every part of an insect's body. 
C)  Tracheae extend through a single tube to an insect's mouth. 
D)  Tracheae provide carbon dioxide to the insects' tissues. 
E)  Tracheae extend from external openings to the wings. 
A)  Tracheae are used for water transport. 
B)  Tracheae penetrate virtually every part of an insect's body. 
C)  Tracheae extend through a single tube to an insect's mouth. 
D)  Tracheae provide carbon dioxide to the insects' tissues. 
E)  Tracheae extend from external openings to the wings.

Question 7

The type of symmetry possessed by the cnidarians is known as _______ symmetry.

Accepted Answer

A)  asymmetrical 
B)  radial 
C)  spherical 
D)  bilateral 
E)  axial 
A)  asymmetrical 
B)  radial 
C)  spherical 
D)  bilateral 
E)  axial

Question 8

The evolution of a chitinous exoskeleton affected many aspects of arthropod evolution.The aspect that was least affected was the

Accepted Answer

A)  division of labor among the body parts. 
B)  mode of locomotion. 
C)  pattern of growth. 
D)  system of gas exchange. 
E)  mode of digestion. 
A)  division of labor among the body parts. 
B)  mode of locomotion. 
C)  pattern of growth. 
D)  system of gas exchange. 
E)  mode of digestion.

Question 9

The horny scales that cover the skin of reptiles prevent them from

Accepted Answer

A)  using their skin as an organ of gas exchange. 
B)  sustaining high levels of metabolic activity. 
C)  laying their eggs in water. 
D)  flying. 
E)  crawling into small spaces. 
A)  using their skin as an organ of gas exchange. 
B)  sustaining high levels of metabolic activity. 
C)  laying their eggs in water. 
D)  flying. 
E)  crawling into small spaces.

Question 10

Which marine arthropods are so numerous that they are thought to be the most abundant of all such organisms?

Accepted Answer

A)  Crustaceans 
B)  Millipedes 
C)  Nematomorphs 
D)  Barnacles 
E)  Apterygotes 
A)  Crustaceans 
B)  Millipedes 
C)  Nematomorphs 
D)  Barnacles 
E)  Apterygotes

Question 11

Which group has a water vascular system?

Accepted Answer

A)  Mollusks 
B)  Chordates 
C)  Annelids 
D)  Echinoderms 
E)  Hemichordates 
A)  Mollusks 
B)  Chordates 
C)  Annelids 
D)  Echinoderms 
E)  Hemichordates

Question 12

The rigid exoskeleton of some ecdysozoans has protective and supportive advantages,but it poses which problem?

Accepted Answer

A)  The exoskeleton prevents the animal from moving rapidly. 
B)  The exoskeleton cannot grow as the animal's body grows. 
C)  The animal must consume large amounts of food to support the growth of the exoskeleton. 
D)  The exoskeleton attracts predators. 
E)  The exoskeleton is vulnerable to overexposure from the sun. 
A)  The exoskeleton prevents the animal from moving rapidly. 
B)  The exoskeleton cannot grow as the animal's body grows. 
C)  The animal must consume large amounts of food to support the growth of the exoskeleton. 
D)  The exoskeleton attracts predators. 
E)  The exoskeleton is vulnerable to overexposure from the sun.

Question 13

_______ possess a _______ in their larval stage that is lost in the adult.

Accepted Answer

A)  Tunicates;tunic 
B)  Larvaceans;notochord 
C)  Lancelots;tail 
D)  Vertebrates;notochord 
E)  Salps;foot 
A)  Tunicates;tunic 
B)  Larvaceans;notochord 
C)  Lancelots;tail 
D)  Vertebrates;notochord 
E)  Salps;foot

Question 14

Which feature is a synapomorphy for the eumetazoans?

Accepted Answer

A)  Two embryonic cell layers 
B)  Radial symmetry 
C)  A blastopore that develops into the mouth 
D)  A blastopore that develops into the anus 
E)  Distinct organ systems 
A)  Two embryonic cell layers 
B)  Radial symmetry 
C)  A blastopore that develops into the mouth 
D)  A blastopore that develops into the anus 
E)  Distinct organ systems

Question 15

Animals with thin cuticles are generally restricted to moist habitats because

Accepted Answer

A)  the thin cuticle causes water to be lost across the body surface. 
B)  there are fewer predators in these habitats. 
C)  these animals rely on flowing water to bring them food. 
D)  movement is easier for them than on dry land. 
E)  None of the above 
A)  the thin cuticle causes water to be lost across the body surface. 
B)  there are fewer predators in these habitats. 
C)  these animals rely on flowing water to bring them food. 
D)  movement is easier for them than on dry land. 
E)  None of the above

Question 16

You have found a segmented marine animal with parapodia.Which is the most inclusive group to which this organism could belong?

Accepted Answer

A)  Nematodes 
B)  Annelids 
C)  Brachiopods 
D)  Mollusks 
E)  Flatworms 
A)  Nematodes 
B)  Annelids 
C)  Brachiopods 
D)  Mollusks 
E)  Flatworms

Question 17

You discover a new organism with the following characteristics: a wormlike body with a fluid-filled cavity,a feeding organ that looks like a proboscis,and a complete digestive tract.The organism is most likely a(n)

Accepted Answer

A)  annelid. 
B)  flatworm. 
C)  nematode. 
D)  ribbon worm. 
E)  horsehair worm. 
A)  annelid. 
B)  flatworm. 
C)  nematode. 
D)  ribbon worm. 
E)  horsehair worm.

Question 18

Which echinoderm group was much more abundant in the past than it is today?

Accepted Answer

A)  Crinoids 
B)  Brittle stars 
C)  Sea stars 
D)  Sea urchins and sand dollars 
E)  Sea cucumbers 
A)  Crinoids 
B)  Brittle stars 
C)  Sea stars 
D)  Sea urchins and sand dollars 
E)  Sea cucumbers

Question 19

Which feature is not found in the chordate lineage?

Accepted Answer

A)  Bilateral symmetry 
B)  A dorsal hollow nerve cord 
C)  An external skeleton 
D)  Pharyngeal slits at some stage during development 
E)  A notochord at some stage during development 
A)  Bilateral symmetry 
B)  A dorsal hollow nerve cord 
C)  An external skeleton 
D)  Pharyngeal slits at some stage during development 
E)  A notochord at some stage during development

Question 20

Which characteristic is not a feature of the sponges?

Accepted Answer

A)  Gastrovascular cavity 
B)  No distinct tissue types or organs 
C)  No separation between different cell layers 
D)  Organization around a water canal system 
E)  Asymmetry 
A)  Gastrovascular cavity 
B)  No distinct tissue types or organs 
C)  No separation between different cell layers 
D)  Organization around a water canal system 
E)  Asymmetry

Exam 23: Animal Origins and Diversity

Which statement about insect wings is true?

Which statement about the amphibians is true?

Which feature is not associated with the rotifers?

The body cavity of coelomate animals develops within the

Which feature is an adaptation found in flatworms that is associated with a parasitic lifestyle?

Which statement about the tracheal system in insects is true?

The type of symmetry possessed by the cnidarians is known as _______ symmetry.

The evolution of a chitinous exoskeleton affected many aspects of arthropod evolution.The aspect that was least affected was the

The horny scales that cover the skin of reptiles prevent them from

Which marine arthropods are so numerous that they are thought to be the most abundant of all such organisms?

Which group has a water vascular system?

The rigid exoskeleton of some ecdysozoans has protective and supportive advantages,but it poses which problem?

_______ possess a _______ in their larval stage that is lost in the adult.

Which feature is a synapomorphy for the eumetazoans?

Animals with thin cuticles are generally restricted to moist habitats because

You have found a segmented marine animal with parapodia.Which is the most inclusive group to which this organism could belong?

You discover a new organism with the following characteristics: a wormlike body with a fluid-filled cavity,a feeding organ that looks like a proboscis,and a complete digestive tract.The organism is most likely a(n)

Which echinoderm group was much more abundant in the past than it is today?

Which feature is not found in the chordate lineage?

Which characteristic is not a feature of the sponges?

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Reproduction of Flowering Plants

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters

_ possess a _ in their larval stage that is lost in the adult.