Question 1

Segmentation in arthropods differs from that of annelids because arthropod segments are:

Accepted Answer

A)  smaller 
B)  superficial 
C)  more specialized 
D)  only present in adults 
E)  only present in larvae 
A)  smaller 
B)  superficial 
C)  more specialized 
D)  only present in adults 
E)  only present in larvae

Question 2

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 3

Figure 31-1 ​
 
Refer to the accompanying figure. What is the structure labeled as 9?

Accepted Answer

A)  medusa 
B)  planula 
C)  miracidium 
D)  feeding polyp 
E)  polyp colony 
A)  medusa 
B)  planula 
C)  miracidium 
D)  feeding polyp 
E)  polyp colony

Question 4

Identify the distinguishing characteristics of phylum Cnidaria. Outline the classes within this phylum and their major characteristics. Include at least one representative for each class.

Accepted Answer

Members of phylum Cnidaria are character

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

Match between columns
                        Premises: leeches

Accepted Answer

The Answer of Platyhelminthes and Nematoda and Arthropoda and Nemertea is...

Question 7

Members of phylum Ctenophora are diploblastic but lack cnidocytes. 
 
 ​

Accepted Answer

A) True 
 B)False

Question 8

Biramous appendages in arthropods are only present in which organism?

Accepted Answer

A)  insects 
B)  arachnids 
C)  centipedes 
D)  crustaceans 
E)  horseshoe crabs 
A)  insects 
B)  arachnids 
C)  centipedes 
D)  crustaceans 
E)  horseshoe crabs

Question 9

Which is a characteristic of tapeworms?

Accepted Answer

A)  Tapeworms have a simple life cycle. 
B)  Tapeworms have a complete digestive system. 
C)  Tapeworms have a closed circulatory system. 
D)  Tapeworms have a well developed sensory system. 
E)  Tapeworms have bodies that consist of hundreds of reproductive segments. 
A)  Tapeworms have a simple life cycle. 
B)  Tapeworms have a complete digestive system. 
C)  Tapeworms have a closed circulatory system. 
D)  Tapeworms have a well developed sensory system. 
E)  Tapeworms have bodies that consist of hundreds of reproductive segments.

Question 10

What is the purpose of protonephridia in flatworms?

Accepted Answer

A)  to sense prey 
B)  to exchange gas 
C)  to respond to stimuli 
D)  to regulate fluid balance 
E)  to serve as a structure for sexual reproduction 
A)  to sense prey 
B)  to exchange gas 
C)  to respond to stimuli 
D)  to regulate fluid balance 
E)  to serve as a structure for sexual reproduction

Question 11

Which arthropod has chelicerae, pedipalps, and silk glands?

Accepted Answer

A)  tick 
B)  mite 
C)  spider 
D)  scorpion 
E)  barnacle 
A)  tick 
B)  mite 
C)  spider 
D)  scorpion 
E)  barnacle

Question 12

The nervous system of many species of flatworms

Accepted Answer

A)  consists of a single, large ganglion in the anterior end. 
B)  is sometimes referred to as tubelike. 
C)  includes two dorsal nerve cords. 
D)  is diffuse and netlike. 
E)  is a "ladder-type." 
A)  consists of a single, large ganglion in the anterior end. 
B)  is sometimes referred to as tubelike. 
C)  includes two dorsal nerve cords. 
D)  is diffuse and netlike. 
E)  is a "ladder-type."

Question 13

Which class of animals has the largest number of species?

Accepted Answer

A)  Arachnida 
B)  Insecta 
C)  Gastropoda 
D)  Bivalvia 
E)  Arthropoda 
A)  Arachnida 
B)  Insecta 
C)  Gastropoda 
D)  Bivalvia 
E)  Arthropoda

Question 14

Which of the following is a marine species that is segmented and has many setae, a well-developed head, separate sexes, and trochophore larva?

Accepted Answer

A)  sponges 
B)  sandworms and tubeworms 
C)  earthworms 
D)  leeches 
E)  mollusks 
A)  sponges 
B)  sandworms and tubeworms 
C)  earthworms 
D)  leeches 
E)  mollusks

Question 15

A polyp is a type of stinging cell.

Accepted Answer

A) True 
 B)False

Question 16

The body wall of cnidarians and ctenophores consist of:

Accepted Answer

A)  three tissue layers 
B)  a single epidermal layer 
C)  loosely organized cells 
D)  two epidermal layers with scattered mesophyll cells in between 
E)  inner and outer cell layers separated by a jelly-like mesoglea 
A)  three tissue layers 
B)  a single epidermal layer 
C)  loosely organized cells 
D)  two epidermal layers with scattered mesophyll cells in between 
E)  inner and outer cell layers separated by a jelly-like mesoglea

Question 17

Most mollusks are:

Accepted Answer

A)  found in fresh water 
B)  terrestrial 
C)  parasitic 
D)  arboreal 
E)  marine 
A)  found in fresh water 
B)  terrestrial 
C)  parasitic 
D)  arboreal 
E)  marine

Question 18

Match between columns
                        Premises: roundworms

Accepted Answer

The Answer of Annelida and Rotifera and Porifera and Platyhelminthes is...

Question 19

Match between columns
                        Premises: corals

Accepted Answer

The Answer of Nematoda and Annelida and Rotifera and Cnidaria is...

Question 20

What is the mode of nutrition for clams and oysters?

Accepted Answer

A)  autotrophy 
B)  herbivores 
C)  omnivores 
D)  carnivores 
E)  filter feeders 
A)  autotrophy 
B)  herbivores 
C)  omnivores 
D)  carnivores 
E)  filter feeders

Exam 31: Sponges, Cnidarians, Ctenophores, and Protostomes

Segmentation in arthropods differs from that of annelids because arthropod segments are:

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

Figure 31-1 ​ Refer to the accompanying figure. What is the structure labeled as 9?

Identify the distinguishing characteristics of phylum Cnidaria. Outline the classes within this phylum and their major characteristics. Include at least one representative for each class.

Which of the following statements about arthropods is FALSE ?

Members of phylum Ctenophora are diploblastic but lack cnidocytes. ​

Biramous appendages in arthropods are only present in which organism?

Which is a characteristic of tapeworms?

What is the purpose of protonephridia in flatworms?

Which arthropod has chelicerae, pedipalps, and silk glands?

The nervous system of many species of flatworms

Which class of animals has the largest number of species?

Which of the following is a marine species that is segmented and has many setae, a well-developed head, separate sexes, and trochophore larva?

A polyp is a type of stinging cell.

The body wall of cnidarians and ctenophores consist of:

Most mollusks are:

What is the mode of nutrition for clams and oysters?

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

Filters

Figure 31-1 Refer to the accompanying figure. What is the structure labeled as 9?

Members of phylum Ctenophora are diploblastic but lack cnidocytes.