Question 1

Members of phylum Nemertea have a(n) tube-with-a-tube body plan. 
____________________

Accepted Answer

A) True 
 B)False

Question 2

An animal found in the rocky intertidal zone has eight overlapping plates and is tightly adhering to the rock with a muscular foot. This animal is most likely a member of the class:

Accepted Answer

A)  Polyplacophora. 
B)  Cephalopoda. 
C)  Polychaeta. 
D)  Gastropoda. 
E)  Bivalvia. 
A)  Polyplacophora. 
B)  Cephalopoda. 
C)  Polychaeta. 
D)  Gastropoda. 
E)  Bivalvia.

Question 3

Which structure do numerous mollusks use to scrape algae off rocks?

Accepted Answer

A)  chelicerae 
B)  pupa 
C)  radula 
D)  beak 
E)  shell 
A)  chelicerae 
B)  pupa 
C)  radula 
D)  beak 
E)  shell

Question 4

Which are the animals with a crown of cilia that look like a spinning wheel?

Accepted Answer

A)  rotifers. 
B)  phoronids. 
C)  bryozoans. 
D)  ctenophores. 
E)  platyhelminthes. 
A)  rotifers. 
B)  phoronids. 
C)  bryozoans. 
D)  ctenophores. 
E)  platyhelminthes.

Question 5

A(n) nematocyst is a type of stinging cell. 
____________________

Accepted Answer

A) True 
 B)False

Question 6

As adults, ____ are the only sessile crustaceans whose external anatomy is completely different than its fellow crustaceans.

Accepted Answer

A)  ticks 
B)  shrimp 
C)  decapods 
D)  uniramids 
E)  barnacles 
A)  ticks 
B)  shrimp 
C)  decapods 
D)  uniramids 
E)  barnacles

Question 7

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 8

Within the phylum Cnidaria, corals are most closely related to which organism?

Accepted Answer

A)  Hydra 
B)  jellyfish 
C)  hydrozoans 
D)  sea anemones 
E)  Portuguese man-of-war 
A)  Hydra 
B)  jellyfish 
C)  hydrozoans 
D)  sea anemones 
E)  Portuguese man-of-war

Question 9

Why is the survival of coral reefs threatened by human activities and environmental factors?

Accepted Answer

Concepts to Consider: Briefly explain th

Question 10

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 11

Members of phylum Arthropoda have paired, jointed appendages. 
____________________

Accepted Answer

A) True 
 B)False

Question 12

Parapodia are characteristic of oligochaetes . 
____________________

Accepted Answer

A) True 
 B)False

Question 13

Figure 31-3   Refer to the accompanying figure. The structures labeled as 1 are used for:

Accepted Answer

A)  feeding. 
B)  reproduction. 
C)  attachment. 
D)  movement. 
E)  protection. 
A)  feeding. 
B)  reproduction. 
C)  attachment. 
D)  movement. 
E)  protection.

Question 14

Insects are vectors of many diseases that affect humans. List several diseases and their insect vectors.

Accepted Answer

Malaria and yellow fever are transmitted

Question 15

Segmentation is important in annelids as an aid in:

Accepted Answer

A)  reproduction. 
B)  locomotion. 
C)  respiration. 
D)  sensation. 
E)  eating. 
A)  reproduction. 
B)  locomotion. 
C)  respiration. 
D)  sensation. 
E)  eating.

Question 16

In cnidarians, nematocysts are housed within why type of specialized cell?

Accepted Answer

A)  cnidocils 
B)  nerve nets 
C)  cnidocytes 
D)  choanocytes 
E)  pseudopodia 
A)  cnidocils 
B)  nerve nets 
C)  cnidocytes 
D)  choanocytes 
E)  pseudopodia

Question 17

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 18

Where does digestion in a sponge takes place?

Accepted Answer

A)  spicule 
B)  osculum 
C)  mesophyll 
D)  spongocoel 
E)  individual cells 
A)  spicule 
B)  osculum 
C)  mesophyll 
D)  spongocoel 
E)  individual cells

Question 19

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 20

The ____ of an earthworm allows them to resist desiccation in terrestrial environments.

Accepted Answer

A)  shell 
B)  cuticle 
C)  mesoglea 
D)  epidermis 
E)  endodermis 
A)  shell 
B)  cuticle 
C)  mesoglea 
D)  epidermis 
E)  endodermis

Exam 31: Sponges, Cnidarians, Ctenophores, and Protostomes

Members of phylum Nemertea have a(n) tube-with-a-tube body plan. ____________________

An animal found in the rocky intertidal zone has eight overlapping plates and is tightly adhering to the rock with a muscular foot. This animal is most likely a member of the class:

Which structure do numerous mollusks use to scrape algae off rocks?

Which are the animals with a crown of cilia that look like a spinning wheel?

A(n) nematocyst is a type of stinging cell. ____________________

As adults, ____ are the only sessile crustaceans whose external anatomy is completely different than its fellow crustaceans.

Which is a characteristic of tapeworms?

Within the phylum Cnidaria, corals are most closely related to which organism?

Why is the survival of coral reefs threatened by human activities and environmental factors?

The body wall of cnidarians and ctenophores consist of:

Members of phylum Arthropoda have paired, jointed appendages. ____________________

Parapodia are characteristic of oligochaetes . ____________________

Figure 31-3 Refer to the accompanying figure. The structures labeled as 1 are used for:

Insects are vectors of many diseases that affect humans. List several diseases and their insect vectors.

Segmentation is important in annelids as an aid in:

In cnidarians, nematocysts are housed within why type of specialized cell?

The nervous system of many species of flatworms

Where does digestion in a sponge takes place?

Biramous appendages in arthropods are only present in which organism?

The ____ of an earthworm allows them to resist desiccation in terrestrial environments.

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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