Question 1

What is the probable sequence in which the following animal clades originated, from earliest to most recent?

Accepted Answer

A)  bilaterians, deuterostomes, vertebrates, tetrapods, amniotes 
B)  bilaterians, deuterostomes, amniotes, vertebrates, tetrapods 
C)  deuterostomes, bilaterians, amniotes, vertebrates, tetrapods 
D)  deuterostomes, bilaterians, vertebrates, tetrapods, amniotes 
A)  bilaterians, deuterostomes, vertebrates, tetrapods, amniotes 
B)  bilaterians, deuterostomes, amniotes, vertebrates, tetrapods 
C)  deuterostomes, bilaterians, amniotes, vertebrates, tetrapods 
D)  deuterostomes, bilaterians, vertebrates, tetrapods, amniotes

Question 2

Which of the following statements comparing symmetry in sessile and swimming animals is most probable?

Accepted Answer

A)  Radial symmetry is more advantageous for active swimming than is bilateral symmetry. 
B)  Radial symmetry occurs most frequently in animals that catch their prey by rapid swimming. 
C)  Bilateral symmetry allowed animals to evolve nerves. 
D)  Bilaterally symmetric animals can be streamlined for swimming, but radially symmetric animals cannot. 
A)  Radial symmetry is more advantageous for active swimming than is bilateral symmetry. 
B)  Radial symmetry occurs most frequently in animals that catch their prey by rapid swimming. 
C)  Bilateral symmetry allowed animals to evolve nerves. 
D)  Bilaterally symmetric animals can be streamlined for swimming, but radially symmetric animals cannot.

Question 3

Nudibranchs, a type of predatory sea slug, can have various protuberances (that is, extensions) on their dorsal surfaces. Rhinophores are paired structures, located close to the head, which bear many chemoreceptors. Dorsal plumules, usually located posteriorly, perform respiratory gas exchange. Cerata usually cover much of the dorsal surface and contain nematocysts at their tips.
If nudibranch rhinophores are located at the anterior ends of these sea slugs, then they contribute to the sea slugs' ________.

Accepted Answer

A)  segmentation 
B)  lack of torsion 
C)  development of a head 
D)  identity as lophotrochozoans 
A)  segmentation 
B)  lack of torsion 
C)  development of a head 
D)  identity as lophotrochozoans

Question 4

The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of

Accepted Answer

A)  a body cavity. 
B)  a complete digestive tract. 
C)  mesoderm. 
D)  tissues. 
A)  a body cavity. 
B)  a complete digestive tract. 
C)  mesoderm. 
D)  tissues.

Question 5

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that ________.

Accepted Answer

A)  we could not clone a larva from the somatic cells of such an adult insect 
B)  such species must reproduce only asexually 
C)  the descendants of these adults do not include a larval stage 
D)  metamorphosis can no longer occur among the descendants of such adults 
A)  we could not clone a larva from the somatic cells of such an adult insect 
B)  such species must reproduce only asexually 
C)  the descendants of these adults do not include a larval stage 
D)  metamorphosis can no longer occur among the descendants of such adults

Question 6

Which of the following would you classify as something other than an animal?

Accepted Answer

A)  sponge 
B)  coral 
C)  jellyfish 
D)  choanoflagellate 
A)  sponge 
B)  coral 
C)  jellyfish 
D)  choanoflagellate

Question 7

You find a new species of worm and want to classify it. Which of the following lines of evidence would allow you to classify the worm as a nematode and not an annelid?

Accepted Answer

A)  It is segmented. 
B)  It is triploblastic. 
C)  It has a coelom. 
D)  It sheds its external skeleton to grow. 
A)  It is segmented. 
B)  It is triploblastic. 
C)  It has a coelom. 
D)  It sheds its external skeleton to grow.

Exam 32: An Overview of Animal Diversity

What is the probable sequence in which the following animal clades originated, from earliest to most recent?

Which of the following statements comparing symmetry in sessile and swimming animals is most probable?

The distinction between sponges and other animal phyla is based mainly on the absence versus the presence of

In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. A consequence of this occurrence is that ________.

Which of the following would you classify as something other than an animal?

You find a new species of worm and want to classify it. Which of the following lines of evidence would allow you to classify the worm as a nematode and not an annelid?

Evolution, the Themes of Biology, and Scientific Inquiry

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Viruses

Dna Tools and Biotechnology

Genomes and Their Evolution

Descent With Modification: a Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonised Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Vascular Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Angiosperm Reproduction and Biotechnology

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signalling

Nervous Systems

Sensory and Motor Mechanisms

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