Question 1

Which of the following characteristics is probably most responsible for the great diversification of insects on land?

Accepted Answer

A) segmentation 
B) antennae 
C) eyes 
D) bilateral symmetry 
E) exoskeleton 
A) segmentation 
B) antennae 
C) eyes 
D) bilateral symmetry 
E) exoskeleton

Question 2

A land snail, a clam, and an octopus all share

Accepted Answer

A) a mantle. 
B) a radula. 
C) gills. 
D) embryonic torsion. 
E) distinct cephalization. 
A) a mantle. 
B) a radula. 
C) gills. 
D) embryonic torsion. 
E) distinct cephalization.

Question 3

Which of the following are characteristics of the phylum Cnidaria?
1) a gastrovascular cavity
2) a polyp stage
3) a medusa stage
4) cnidocytes
5) a pseudocoelom

Accepted Answer

A) 1 and 4 
B) 2 and 3 
C) 2, 3, and 4 
D) 1, 2, 3, and 4 
E) all five of these 
A) 1 and 4 
B) 2 and 3 
C) 2, 3, and 4 
D) 1, 2, 3, and 4 
E) all five of these

Question 4

Which phylum is characterized by animals that have a segmented body?

Accepted Answer

A) Cnidaria 
B) Platyhelminthes 
C) Silicea 
D) Arthropoda 
E) Mollusca 
A) Cnidaria 
B) Platyhelminthes 
C) Silicea 
D) Arthropoda 
E) Mollusca

Question 5

Of the annelid classes below, which have parapodia?

Accepted Answer

A) Oligochaeta 
B) Polychaeta 
C) Hirudinea (leeches) 
D) all three of these 
E) two of these 
A) Oligochaeta 
B) Polychaeta 
C) Hirudinea (leeches) 
D) all three of these 
E) two of these

Question 6

The following questions refer to the paragraph below.
A farm pond, usually dry during winter, has plenty of water and aquatic pond life during the summer. One summer, Sarah returns to the family farm from college. Observing the pond, she is fascinated by some six-legged organisms that can crawl about on submerged surfaces or, when disturbed, seemingly "jet" through the water. Watching further, she is able to conclude that the "mystery organisms" are ambush predators, and their prey includes everything from insects to small fish and tadpoles.
-Deuterostomes that have an endoskeleton are part of which phylum?

Accepted Answer

A) Cnidaria 
B) Annelida 
C) Mollusca 
D) Arthropoda 
E) Echinodermata 
A) Cnidaria 
B) Annelida 
C) Mollusca 
D) Arthropoda 
E) Echinodermata

Question 7

Which of the following are elongated in the oral-aboral axis?

Accepted Answer

A) class Crinoidea (sea lilies and feather stars) 
B) class Asteroidea (sea stars) 
C) class Ophiuroidea (brittle stars) 
D) class Echinoidea (sea urchins and sand dollars) 
E) class Holothuroidea (sea cucumbers) 
A) class Crinoidea (sea lilies and feather stars) 
B) class Asteroidea (sea stars) 
C) class Ophiuroidea (brittle stars) 
D) class Echinoidea (sea urchins and sand dollars) 
E) class Holothuroidea (sea cucumbers)

Question 8

Which of the following is a characteristic of nematodes?

Accepted Answer

A) All species can be characterized either as scavengers or as decomposers. 
B) They have only longitudinal muscles. 
C) They have a True coelom. 
D) They have a gastrovascular cavity. 
E) Many species are diploblastic. 
A) All species can be characterized either as scavengers or as decomposers. 
B) They have only longitudinal muscles. 
C) They have a True coelom. 
D) They have a gastrovascular cavity. 
E) Many species are diploblastic.

Question 9

While working in your garden, you discover a worm-like, segmented animal with two pairs of jointed legs per segment. The animal is probably a

Accepted Answer

A) millipede. 
B) caterpillar. 
C) centipede. 
D) polychaete worm. 
E) sow bug. 
A) millipede. 
B) caterpillar. 
C) centipede. 
D) polychaete worm. 
E) sow bug.

Question 10

A radially symmetrical animal that has two embryonic tissue layers probably belongs to which phylum?

Accepted Answer

A) Porifera 
B) Cnidaria 
C) Platyhelminthes 
D) Nematoda 
E) Echinodermata 
A) Porifera 
B) Cnidaria 
C) Platyhelminthes 
D) Nematoda 
E) Echinodermata

Question 11

Which cells in a sponge are primarily responsible for trapping and removing food particles from circulating water?

Accepted Answer

A) choanocytes 
B) mesoglea cells 
C) pore cells (porocytes) 
D) epidermal cells 
A) choanocytes 
B) mesoglea cells 
C) pore cells (porocytes) 
D) epidermal cells

Question 12

The following questions refer to the paragraph below.
A farm pond, usually dry during winter, has plenty of water and aquatic pond life during the summer. One summer, Sarah returns to the family farm from college. Observing the pond, she is fascinated by some six-legged organisms that can crawl about on submerged surfaces or, when disturbed, seemingly "jet" through the water. Watching further, she is able to conclude that the "mystery organisms" are ambush predators, and their prey includes everything from insects to small fish and tadpoles.
-If the pond organisms are larvae, rather than adults, Sarah should expect them to have all of the following structures, except

Accepted Answer

A) antennae. 
B) an open circulatory system. 
C) an exoskeleton of chitin. 
D) complex eyes. 
E) sex organs. 
A) antennae. 
B) an open circulatory system. 
C) an exoskeleton of chitin. 
D) complex eyes. 
E) sex organs.

Question 13

The larvae of many common tapeworm species that infect humans are usually found

Accepted Answer

A) encysted in freshwater snails. 
B) encysted in the muscles of an animal, such as a cow or pig. 
C) crawling in the abdominal blood vessels of cows and pigs. 
D) encysted in the human brain. 
E) crawling in the intestines of cows and pigs. 
A) encysted in freshwater snails. 
B) encysted in the muscles of an animal, such as a cow or pig. 
C) crawling in the abdominal blood vessels of cows and pigs. 
D) encysted in the human brain. 
E) crawling in the intestines of cows and pigs.

Question 14

Of the annelid classes below, which have externally segmented bodies?

Accepted Answer

A) Oligochaeta 
B) Polychaeta 
C) Hirudinea (leeches) 
D) all three of these 
E) two of these 
A) Oligochaeta 
B) Polychaeta 
C) Hirudinea (leeches) 
D) all three of these 
E) two of these

Question 15

A lophophore is used by ectoprocts and brachiopods

Accepted Answer

A) for locomotion. 
B) at a larval stage. 
C) for feeding. 
D) for sensory reception. 
E) as a skeletal system. 
A) for locomotion. 
B) at a larval stage. 
C) for feeding. 
D) for sensory reception. 
E) as a skeletal system.

Question 16

Nematode worms and annelid worms share which of the following features?

Accepted Answer

A) use of fluid in the body cavity as a hydrostatic skeleton 
B) ecdysis 
C) presence of a circulatory system 
D) presence of segmentation 
E) absence of species with parasitic lifestyles 
A) use of fluid in the body cavity as a hydrostatic skeleton 
B) ecdysis 
C) presence of a circulatory system 
D) presence of segmentation 
E) absence of species with parasitic lifestyles

Question 17

Which of the following can be used to distinguish a nematode worm from an annelid worm?
1) type of body cavity
2) number of muscle layers in the body wall
3) presence of segmentation
4) number of embryonic tissue layers
5) shape of worm in cross-sectional view

Accepted Answer

A) 2 only 
B) 2 and 3 
C) 1, 2, and 3 
D) 1, 2, 3, and 5 
E) all five of these 
A) 2 only 
B) 2 and 3 
C) 1, 2, and 3 
D) 1, 2, 3, and 5 
E) all five of these

Question 18

Which of the following can have long, movable spines?

Accepted Answer

A) class Crinoidea (sea lilies and feather stars) 
B) class Asteroidea (sea stars) 
C) class Ophiuroidea (brittle stars) 
D) class Echinoidea (sea urchins and sand dollars) 
E) class Holothuroidea (sea cucumbers) 
A) class Crinoidea (sea lilies and feather stars) 
B) class Asteroidea (sea stars) 
C) class Ophiuroidea (brittle stars) 
D) class Echinoidea (sea urchins and sand dollars) 
E) class Holothuroidea (sea cucumbers)

Question 19

The following questions refer to the paragraph below.
An elementary school science teacher decided to liven up the classroom with a salt-water aquarium. Knowing that salt-water aquaria can be quite a hassle, the teacher proceeded stepwise. First, the teacher conditioned the water. Next, the teacher decided to stock the tank with various marine invertebrates, including a polychaete, a siliceous sponge, several bivalves, a shrimp, several sea anemones of different types, a colonial hydra, a few coral species, an ectoproct, a sea star, and several gastropod varieties. Lastly, some vertebrates-a parrotfish and a clownfish-were added. She arranged for daily feedings of copepods and feeder fish.
-The teacher was unaware of the difference between suspension feeding and predation. The teacher thought that by providing live copepods (2 mm long)and feeder fish (2 cm long)the dietary needs of all of the organisms would be satisfied. Consequently, which two organisms would have been among the first to starve to death (assuming they lack photosynthetic endosymbionts)?
1) sponges
2) coral animals
3) bivalves
4) sea stars
5) shrimp

Accepted Answer

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

Question 20

Which of the following combinations of phylum and description is incorrect?

Accepted Answer

A) Echinodermata bilateral symmetry as a larva, coelom present 
B) Nematoda roundworms, pseudocoelomate 
C) Cnidaria radial symmetry, polyp and medusa body forms 
D) Platyhelminthes flatworms, gastrovascular cavity, acoelomate 
E) Calcarea gastrovascular cavity, coelom present 
A) Echinodermata bilateral symmetry as a larva, coelom present 
B) Nematoda roundworms, pseudocoelomate 
C) Cnidaria radial symmetry, polyp and medusa body forms 
D) Platyhelminthes flatworms, gastrovascular cavity, acoelomate 
E) Calcarea gastrovascular cavity, coelom present

Exam 33: Invertebrates

Which of the following characteristics is probably most responsible for the great diversification of insects on land?

A land snail, a clam, and an octopus all share

Which of the following are characteristics of the phylum Cnidaria? 1) a gastrovascular cavity 2) a polyp stage 3) a medusa stage 4) cnidocytes 5) a pseudocoelom

Which phylum is characterized by animals that have a segmented body?

Of the annelid classes below, which have parapodia?

Which of the following are elongated in the oral-aboral axis?

Which of the following is a characteristic of nematodes?

While working in your garden, you discover a worm-like, segmented animal with two pairs of jointed legs per segment. The animal is probably a

A radially symmetrical animal that has two embryonic tissue layers probably belongs to which phylum?

Which cells in a sponge are primarily responsible for trapping and removing food particles from circulating water?

The larvae of many common tapeworm species that infect humans are usually found

Of the annelid classes below, which have externally segmented bodies?

A lophophore is used by ectoprocts and brachiopods

Nematode worms and annelid worms share which of the following features?

Which of the following can be used to distinguish a nematode worm from an annelid worm? 1) type of body cavity 2) number of muscle layers in the body wall 3) presence of segmentation 4) number of embryonic tissue layers 5) shape of worm in cross-sectional view

Which of the following can have long, movable spines?

Which of the following combinations of phylum and description is incorrect?

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and the Fitness of the Environment

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: Harvesting Chemical Energy

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

From Gene to Protein

Control of Gene Expression

Viruses

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 Colonized Land

Plant Diversity Ii: the Evolution of Seed Plants

Fungi

An Introduction to Animal Diversity

Vertebrates

Plant Structure, Growth, and Development

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 Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems

Conservation Biology and Restoration Ecology

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