Question 1

Members of the Ecdysozoa clade are characterized by having a cuticle. 
____________________

Accepted Answer

A) True 
 B)False

Question 2

Figure 31-7   Which insect in the accompanying figure represents a group that parasitizes plants?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 3

Figure 31-4   The larva in the accompanying figure is characteristic of which group of organisms?

Accepted Answer

A)  mollusks 
B)  cnidarians 
C)  nematodes 
D)  arthropods 
E)  platyhelminthes 
A)  mollusks 
B)  cnidarians 
C)  nematodes 
D)  arthropods 
E)  platyhelminthes

Question 4

Which is a unique adaptation in insects not found in any other arthropod?

Accepted Answer

A)  wings 
B)  cephalization 
C)  segmentation 
D)  hard exoskeletons 
E)  specialized mouthparts 
A)  wings 
B)  cephalization 
C)  segmentation 
D)  hard exoskeletons 
E)  specialized mouthparts

Question 5

Which of the following statements about arthropods is FALSE ?

Accepted Answer

A)  Arthropods have a true coelom 
B)  Arthropods have an exoskeleton. 
C)  Arthropods display segmentation. 
D)  Arthropods have an open circulatory system. 
E)  Arthropods have an incomplete digestive tract. 
A)  Arthropods have a true coelom 
B)  Arthropods have an exoskeleton. 
C)  Arthropods display segmentation. 
D)  Arthropods have an open circulatory system. 
E)  Arthropods have an incomplete digestive tract.

Question 6

A radula is characteristic of certain members of phylum Platyhelminthes . 
____________________

Accepted Answer

A) True 
 B)False

Question 7

Most arachnids have ____ pair(s) of jointed appendages.

Accepted Answer

A)  one 
B)  two 
C)  four 
D)  six 
E)  eight 
A)  one 
B)  two 
C)  four 
D)  six 
E)  eight

Question 8

List two characteristics that have contributed to the biological success of the insects, and briefly explain the adaptive value of each characteristic that you identified.

Accepted Answer

Exoskeleton: protection against predator

Question 9

The circulatory system of cephalopods is closed, whereas that of all other mollusks is open. Explain the difference between open and closed circulatory systems, and describe how each system is adequate for the groups possessing it.

Accepted Answer

Concepts to Consider: An open circulator

Question 10

Which is critical to polychaete and oligochaete locomotion?

Accepted Answer

A)  jointed appendages 
B)  parapodia 
C)  tentacles 
D)  setae 
E)  fins 
A)  jointed appendages 
B)  parapodia 
C)  tentacles 
D)  setae 
E)  fins

Question 11

Figure 31-4   Refer to the accompanying figure. What is the structure labeled as 6?

Accepted Answer

A)  anus 
B)  gills 
C)  cilia 
D)  mouth 
E)  digestive tract 
A)  anus 
B)  gills 
C)  cilia 
D)  mouth 
E)  digestive tract

Question 12

Figure 31-2   Refer to the accompanying figure. What label designates the auricles on this organism?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 13

Ctenophores capture food:

Accepted Answer

A)  with filter feeders. 
B)  using adhesive glue cells that trap prey. 
C)  with stinging hair cells that immobilize small invertebrates. 
D)  by digging through the bottom mud for small invertebrates. 
E)  with a sticky mucus on their tentacles that capture small invertebrates. 
A)  with filter feeders. 
B)  using adhesive glue cells that trap prey. 
C)  with stinging hair cells that immobilize small invertebrates. 
D)  by digging through the bottom mud for small invertebrates. 
E)  with a sticky mucus on their tentacles that capture small invertebrates.

Question 14

Figure 31-2   Refer to the accompanying figure. What is the structure labeled as 8 in the figure?

Accepted Answer

A)  anus 
B)  mouth 
C)  ganglia 
D)  eyespots 
E)  pharynx 
A)  anus 
B)  mouth 
C)  ganglia 
D)  eyespots 
E)  pharynx

Question 15

One characteristic of class Bivalvia is that they:

Accepted Answer

A)  are active swimmers. 
B)  use a radula to feed on algae. 
C)  possess two shells with a hinge. 
D)  use their mantle for locomotion. 
E)  possess shells of overlapping plates. 
A)  are active swimmers. 
B)  use a radula to feed on algae. 
C)  possess two shells with a hinge. 
D)  use their mantle for locomotion. 
E)  possess shells of overlapping plates.

Question 16

Ribbon worms have a unique ____ that is used to capture prey.

Accepted Answer

A)  proboscis 
B)  tentacle 
C)  set of jaws 
D)  forked limb 
E)  stinging cell 
A)  proboscis 
B)  tentacle 
C)  set of jaws 
D)  forked limb 
E)  stinging cell

Question 17

The first animals to show cephalization have several characteristics. Which of the following is NOT one of them?

Accepted Answer

A)  These animals were triploblastic. 
B)  These animals had a proboscis. 
C)  These animals were in phylum Platyhelminthes. 
D)  These animals are placed in the group Lophotrochozoa. 
E)  These animals followed the protostome pattern of embryonic development. 
A)  These animals were triploblastic. 
B)  These animals had a proboscis. 
C)  These animals were in phylum Platyhelminthes. 
D)  These animals are placed in the group Lophotrochozoa. 
E)  These animals followed the protostome pattern of embryonic development.

Question 18

Complete ____ reduces competition among insects within the same species; larval forms do not compete with adults for food or habitats.

Accepted Answer

A)  mobilization 
B)  reproductions 
C)  differentiation 
D)  morphogenisis 
E)  metamorphosis 
A)  mobilization 
B)  reproductions 
C)  differentiation 
D)  morphogenisis 
E)  metamorphosis

Question 19

Members of the phylum ____ are the simplest organisms with a separate mouth and anus.

Accepted Answer

A)  Platyhelminthes 
B)  Ctenophora 
C)  Placozoa 
D)  Porifera 
E)  Cnidaria 
A)  Platyhelminthes 
B)  Ctenophora 
C)  Placozoa 
D)  Porifera 
E)  Cnidaria

Question 20

Figure 31-3   The structure shown in the accompanying figure is from an animal in phylum:

Accepted Answer

A)  Cestoda. 
B)  Turbellaria. 
C)  Trematoda. 
D)  Monogenea. 
E)  Platyhelminthes. 
A)  Cestoda. 
B)  Turbellaria. 
C)  Trematoda. 
D)  Monogenea. 
E)  Platyhelminthes.

Exam 31: Sponges, Cnidarians, Ctenophores, and Protostomes

Members of the Ecdysozoa clade are characterized by having a cuticle. ____________________

Figure 31-7 Which insect in the accompanying figure represents a group that parasitizes plants?

Figure 31-4 The larva in the accompanying figure is characteristic of which group of organisms?

Which is a unique adaptation in insects not found in any other arthropod?

Which of the following statements about arthropods is FALSE ?

A radula is characteristic of certain members of phylum Platyhelminthes . ____________________

Most arachnids have ____ pair(s) of jointed appendages.

List two characteristics that have contributed to the biological success of the insects, and briefly explain the adaptive value of each characteristic that you identified.

The circulatory system of cephalopods is closed, whereas that of all other mollusks is open. Explain the difference between open and closed circulatory systems, and describe how each system is adequate for the groups possessing it.

Which is critical to polychaete and oligochaete locomotion?

Figure 31-4 Refer to the accompanying figure. What is the structure labeled as 6?

Figure 31-2 Refer to the accompanying figure. What label designates the auricles on this organism?

Ctenophores capture food:

Figure 31-2 Refer to the accompanying figure. What is the structure labeled as 8 in the figure?

One characteristic of class Bivalvia is that they:

Ribbon worms have a unique ____ that is used to capture prey.

The first animals to show cephalization have several characteristics. Which of the following is NOT one of them?

Complete ____ reduces competition among insects within the same species; larval forms do not compete with adults for food or habitats.

Members of the phylum ____ are the simplest organisms with a separate mouth and anus.

Figure 31-3 The structure shown in the accompanying figure is from an animal in phylum:

A View of Life

Atoms and Molecules the Chemical Basis of Life

The Chemistry of Life Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp Energy-Releasing Pathways

Photosynthesis Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

Dna the Carrier of Genetic Information

Gene Expression

Gene Regulation

Dna Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

The Deuterostomes

Plant Structure Growth and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function an Introduction

Protection Support and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

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