Question 1

Filter feeders differ from predators in that filter feeders

Accepted Answer

A)  capture and subdue their prey, while predators wait for food to come to them. 
B)  break down dead organic matter, while predators capture and subdue their prey. 
C)  wait for food to come to them, while predators capture and subdue their prey. 
D)  strain food from their environment, while predators live inside their host. 
E)  strain food from their environment, while predators capture and subdue their prey. 
A)  capture and subdue their prey, while predators wait for food to come to them. 
B)  break down dead organic matter, while predators capture and subdue their prey. 
C)  wait for food to come to them, while predators capture and subdue their prey. 
D)  strain food from their environment, while predators live inside their host. 
E)  strain food from their environment, while predators capture and subdue their prey.

Question 2

Refer to the table, which compares 27 amino acid positions for ten different species.   Which character has states that facilitate phylogenetic analysis among species within protostomes?

Accepted Answer

A)  11 
B)  2 
C)  27 
D)  1 
E)  3 
A)  11 
B)  2 
C)  27 
D)  1 
E)  3

Question 3

Refer to the figure.   The figure shows the different stages (A, B, and C) in the life cycle of the cecropia moth.Would you identify these stages as evidence for direct development or complete metamorphosis? Justify your answer.

Accepted Answer

The insect shown undergoes complete meta

Question 4

An animal whose gut contains enzymes that digest tough, fibrous plant tissues would be classified as a(n) _______.

Accepted Answer

The answer of An animal whose gut contains enzymes that...

Question 5

All of the following are used by predators in locating, capturing, and subduing prey except

Accepted Answer

A)  nematocysts in tentacles. 
B)  sharp teeth. 
C)  keen sensory organs. 
D)  straining devices. 
E)  toxins. 
A)  nematocysts in tentacles. 
B)  sharp teeth. 
C)  keen sensory organs. 
D)  straining devices. 
E)  toxins.

Question 6

Diploblastic animals typically show _______ symmetry.

Accepted Answer

The answer of Diploblastic animals typically show _______ symmetry....

Question 7

Which is not a characteristic feature of the life cycle of an endoparasite?

Accepted Answer

A)  Limited or no digestive system 
B)  Cells with abundant nematocysts 
C)  Multiple hosts 
D)  Large energy investment in reproduction 
E)  A digestion-resistant covering 
A)  Limited or no digestive system 
B)  Cells with abundant nematocysts 
C)  Multiple hosts 
D)  Large energy investment in reproduction 
E)  A digestion-resistant covering

Question 8

Bilaterally symmetrical animals can be divided into two major groups that separated during the Cambrian.These two lineages differ fundamentally in their

Accepted Answer

A)  modes of reproduction. 
B)  early embryological development. 
C)  modes of obtaining and storing energy. 
D)  environmental requirements. 
E)  metabolism. 
A)  modes of reproduction. 
B)  early embryological development. 
C)  modes of obtaining and storing energy. 
D)  environmental requirements. 
E)  metabolism.

Question 9

Animals most likely arose from colonial flagellated protists as a result of division of labor among their aggregated cells.Among animal groups living today, the _______ bear the strongest similarity to the most recent common ancestor of animals.

Accepted Answer

The answer of Animals most likely arose from colonial flagellated...

Question 10

A member of the protostome group of animals

Accepted Answer

A)  has a mouth derived from the blastopore. 
B)  has an anus derived from the blastopore. 
C)  does not have endoderm. 
D)  is diploblastic. 
E)  has spiral cleavage of the egg. 
A)  has a mouth derived from the blastopore. 
B)  has an anus derived from the blastopore. 
C)  does not have endoderm. 
D)  is diploblastic. 
E)  has spiral cleavage of the egg.

Question 11

Fungi, such as mushrooms, can be distinguished from animals because only animals

Accepted Answer

A)  are autotrophic. 
B)  have internal digestion. 
C)  are multicellular. 
D)  have external digestion. 
E)  obtain their food through absorption. 
A)  are autotrophic. 
B)  have internal digestion. 
C)  are multicellular. 
D)  have external digestion. 
E)  obtain their food through absorption.

Question 12

Among the _______, the mouth arises from the blastopore, an embryonic feature that is a synapomorphy of the group.

Accepted Answer

The answer of Among the _______, the mouth arises from...

Question 13

Ctenophores are eumetazoans that lack most of the Hox genes found in all other eumetazoans.They have a radially symmetrical body plan, are diploblastic, and have cells organized into tissues.Based on this information, which of the following is the most appropriate group in which to classify the ctenophores?

Accepted Answer

A)  Sponges 
B)  Sister group to all other animals 
C)  Deuterostomes 
D)  Bilaterians 
E)  Protostomes 
A)  Sponges 
B)  Sister group to all other animals 
C)  Deuterostomes 
D)  Bilaterians 
E)  Protostomes

Question 14

The ancestor of the animal clade was probably a

Accepted Answer

A)  colonial flagellated protist. 
B)  triploblastic acoelomate with spiral cleavage. 
C)  ciliated protist. 
D)  ctenophore. 
E)  protostome. 
A)  colonial flagellated protist. 
B)  triploblastic acoelomate with spiral cleavage. 
C)  ciliated protist. 
D)  ctenophore. 
E)  protostome.

Question 15

_______ obtain energy and nutrients by living on the outside of other living organisms.

Accepted Answer

A)  Filter feeders 
B)  Endoparasites 
C)  Predators 
D)  Ectoparasites 
E)  Detritivores 
A)  Filter feeders 
B)  Endoparasites 
C)  Predators 
D)  Ectoparasites 
E)  Detritivores

Question 16

Fleas and ticks are _______ that are _______.

Accepted Answer

A)  colonial animals; endoparasites 
B)  ecdysozoans; endoparasites 
C)  deuterostomes; endoparasites 
D)  deuterostomes; ectoparasites 
E)  ecdysozoans; ectoparasites 
A)  colonial animals; endoparasites 
B)  ecdysozoans; endoparasites 
C)  deuterostomes; endoparasites 
D)  deuterostomes; ectoparasites 
E)  ecdysozoans; ectoparasites

Question 17

Which of the following does not contribute to evidence that animals have a common ancestor?

Accepted Answer

A)  Animals share similarities in organization and function of genes such as Hox genes. 
B)  Animal cells have unique types of junctions between them. 
C)  All animals are heterotrophs that digest food internally. 
D)  Animals have bilateral symmetry and exhibit cleavage. 
E)  All animals have a common set of extracellular matrix proteins. 
A)  Animals share similarities in organization and function of genes such as Hox genes. 
B)  Animal cells have unique types of junctions between them. 
C)  All animals are heterotrophs that digest food internally. 
D)  Animals have bilateral symmetry and exhibit cleavage. 
E)  All animals have a common set of extracellular matrix proteins.

Question 18

Which characteristic is unique to animals?

Accepted Answer

A)  Unique types of intercellular junctions, such as desmosomes 
B)  A unique set of intracellular molecules 
C)  Heterotrophy: acquiring nutrients from the environment 
D)  Production of true tissues 
E)  Indeterminate growth 
A)  Unique types of intercellular junctions, such as desmosomes 
B)  A unique set of intracellular molecules 
C)  Heterotrophy: acquiring nutrients from the environment 
D)  Production of true tissues 
E)  Indeterminate growth

Question 19

Refer to the figure.   In the animal shown, movement of the body depends on all of the following except

Accepted Answer

A)  appendages. 
B)  a nervous system. 
C)  segmentation. 
D)  absence of a body cavity. 
E)  an exoskeleton. 
A)  appendages. 
B)  a nervous system. 
C)  segmentation. 
D)  absence of a body cavity. 
E)  an exoskeleton.

Question 20

The nervous system consists of a simple nerve net in

Accepted Answer

A)  cnidarians. 
B)  sponges. 
C)  chordates. 
D)  acoelomates. 
E)  pseudocoelomates. 
A)  cnidarians. 
B)  sponges. 
C)  chordates. 
D)  acoelomates. 
E)  pseudocoelomates.

Exam 30: Animal Origins and the Evolution of Body Plans

Filter feeders differ from predators in that filter feeders

Refer to the table, which compares 27 amino acid positions for ten different species. Which character has states that facilitate phylogenetic analysis among species within protostomes?

Refer to the figure. The figure shows the different stages (A, B, and C) in the life cycle of the cecropia moth.Would you identify these stages as evidence for direct development or complete metamorphosis? Justify your answer.

An animal whose gut contains enzymes that digest tough, fibrous plant tissues would be classified as a(n) _______.

All of the following are used by predators in locating, capturing, and subduing prey except

Diploblastic animals typically show _______ symmetry.

Which is not a characteristic feature of the life cycle of an endoparasite?

Bilaterally symmetrical animals can be divided into two major groups that separated during the Cambrian.These two lineages differ fundamentally in their

Animals most likely arose from colonial flagellated protists as a result of division of labor among their aggregated cells.Among animal groups living today, the _______ bear the strongest similarity to the most recent common ancestor of animals.

A member of the protostome group of animals

Fungi, such as mushrooms, can be distinguished from animals because only animals

Among the _______, the mouth arises from the blastopore, an embryonic feature that is a synapomorphy of the group.

The ancestor of the animal clade was probably a

_______ obtain energy and nutrients by living on the outside of other living organisms.

Fleas and ticks are _______ that are _______.

Which of the following does not contribute to evidence that animals have a common ancestor?

Which characteristic is unique to animals?

Refer to the figure. In the animal shown, movement of the body depends on all of the following except

The nervous system consists of a simple nerve net in

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

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, 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

Filters

Fleas and ticks are _ that are _.