Question 1

What does the mesoderm have to do with the designation of a true coelom?

Accepted Answer

A)  The mesoderm gives rise to the fluid found within the coelom.
B)  The mesoderm gives rise to the lining of the coelom.
C)  The mesoderm gives rise to the outer covering of the coelom.
D)  The mesoderm gives rise to the structure of the coelom wall.
E)  The mesoderm has nothing to do with the coelom.F) C) and D)
G) All of the above

Question 2

Match between columns
                        Premises: beetles
flies
true bugs
ants, bees, wasps

Accepted Answer

The Answer of Coleoptera and Hymenoptera and Hemiptera and Diptera is...

Question 3

Which feature do Bryozoans possess that brachiopods lack?

Accepted Answer

A)  a lophophore
B)  a true coelom
C)  an exoskeleton
D)  a shellE) A) and B)
F) A) and C)

Question 4

You are examining a new animal species.You find that you can pass a line through any longitudinal plane and find equal halves.Evaluate the symmetry of this animal.

Accepted Answer

A)  spherical
B)  radial
C)  bilateralD) B) and C)
E) A) and C)

Question 5

A distinctive type of larva shared by several phyla of invertebrates and considered to be important in phylogeny is the

Accepted Answer

A)  trochophore.
B)  paedomorph.
C)  gastrula.
D)  metamere.
E)  tadpolE.F) C) and D)
G) A) and C)

Question 6

The diversification of insects is related to the diversification of food sources in the environment.

Accepted Answer

A) True 
 B)False  True

Question 7

What is a characteristic of most animals?

Accepted Answer

A)  They have Hox genes.
B)  They are autotrophic.
C)  They lack an extracellular matrix of proteins such as collagen.
D)  They have cell walls.E) C) and D)
F) None of the above

Question 8

Describe the route of water through a sponge.

Accepted Answer

A)  enters through the osculum,flows into the central cavity,and exits via the pores
B)  enters through the central cavity,flows into the osculum,and exits via the pores
C)  enters through the pores,flows into the osculum,and exits via the central cavity
D)  enters through the pores,flows into the central cavity,and exits via the osculum
E)  enters through the osculum,flows through the pores,and exits via the central cavityF) B) and C)
G) A) and D)

Question 9

An acoelomate is an animal that

Accepted Answer

A)  has a coelom.
B)  has a pseudocoelom.
C)  has both a coelom and a pseudocoelom.
D)  has neither a coelom nor a pseudocoelom.
E)  has a coelom during early development but later loses it.F) A) and D)
G) None of the above

Question 10

The nervous system of a cnidarian consists of a central ganglion leading into a nerve net.

Accepted Answer

A) True 
 B)False

Question 11

What is a valid distinction between a blastocoel,an archenteron,and a coelom?

Accepted Answer

A)  During development these cavities appear in the sequence blastocoel,archenteron,coelom.
B)  The blastocoel forms the cavity of the digestive tract,the archenteron forms the chest cavity,and the coelom forms the cavity of the digestive tract.
C)  The coelom is bounded only by an external germ layer,the archenteron is bounded by inner and outer layers of germ cells,and the blastocoel is a cavity within the mesoderm.
D)  The coelom has a direct opening to the outside of the embryo whereas the other two cavities do not.E) All of the above
F) None of the above

Question 12

Despite your best attempts to convince her otherwise,your friend is very afraid of spiders and all "bugs," which to her means insects.When you note that spiders are not insects,she claims they are the same thing.You finally convince her that spiders are not insects because,for one thing,spiders

Accepted Answer

A)  lack an exoskeleton.
B)  have a calcium-carbonate layer outside the exoskeleton.
C)  are segmented.
D)  have two body segments joined by a pedicel.E) C) and D)
F) A) and C)

Question 13

What is the correct sequence of stages in the life cycle of the Chinese liver fluke?

Accepted Answer

A)  adult,egg with miracidium,cercaria,sporocyst,rediae,metacercaria,adult
B)  adult,egg with miracidium,sporocyst,rediae,metacercaria,cercaria,adult
C)  adult,egg with miracidium,metacercaria,sporocyst,rediae,cercaria,adult
D)  adult,sporocyst,rediae,cercaria,metacercaria,egg with miracidium,adult
E)  adult,egg with miracidium,sporocyst,rediae,cercaria,metacercaria,adultF) None of the above
G) C) and D) B

Question 14

Suppose you discover a new species of animal that does not have body segments,but is triploblastic,coelomate,and cephalized.Under the molecular phylogenetic scheme,you would allocate it to which phylum?

Accepted Answer

A)  Mollusca
B)  Echinodermata
C)  Nematoda
D)  Platyhelminthes
E)  ArthropodaF) B) and D)
G) C) and D) A

Question 15

In earthworms,what do the nerve cord,the setae,the circular muscles,and the metanephridia have in common?

Accepted Answer

A)  They are serially repeated in the segments of the body.
B)  They are all used in locomotion.
C)  They all play a role in excretion of waste from the body.
D)  They all play a role in the reproductive activities of the earthworm.E) B) and C)
F) None of the above

Question 16

What is the primary characteristic that groups phyla within the Ecdysozoa?

Accepted Answer

A)  They all have tropchophore larvae.
B)  They shed their exoskeletons.
C)  They all have spiral cleavage.
D)  They all have segmentation.E) B) and C)
F) None of the above

Question 17

A horseshoe-shaped crown of tentacles used by many invertebrates for feeding is called a

Accepted Answer

A)  protostome.
B)  fimbrium.
C)  lophophore.
D)  trochophore.
E)  rhizophorE.F) A) and D)
G) All of the above

Question 18

Triploblastic animals are animals that

Accepted Answer

A)  form three separate blastulas from a single embryo.
B)  produce three eggs,each of which forms a single blastula.
C)  form three blastopores in each blastula.
D)  have a blastula composed of three cells.
E)  have three germ layers.F) A) and E)
G) A) and D)

Question 19

Radiata have neither an anterior end nor a posterior end.

Accepted Answer

A) True 
 B)False

Question 20

The protrusible rasping organ in a mollusk's mouth that is used to scrape food from the substrate is

Accepted Answer

A)  a veliger.
B)  a visceral mass.
C)  composed of nacre.
D)  a radula.
E)  an ammonitE.F) B) and E)
G) C) and E)

Exam 25: Animal Diversity: Invertebrates

What does the mesoderm have to do with the designation of a true coelom?

Correct Answer
verified

Match each insect order with the correct representative insects.

Which feature do Bryozoans possess that brachiopods lack?

Correct Answer
verified

You are examining a new animal species.You find that you can pass a line through any longitudinal plane and find equal halves.Evaluate the symmetry of this animal.

Correct Answer
verified

A distinctive type of larva shared by several phyla of invertebrates and considered to be important in phylogeny is the

Correct Answer
verified

The diversification of insects is related to the diversification of food sources in the environment.

Correct Answer
verified
True

What is a characteristic of most animals?

Correct Answer
verified

Describe the route of water through a sponge.

Correct Answer
verified

An acoelomate is an animal that

Correct Answer
verified

The nervous system of a cnidarian consists of a central ganglion leading into a nerve net.

Correct Answer
verified

What is a valid distinction between a blastocoel,an archenteron,and a coelom?

Correct Answer
verified

Despite your best attempts to convince her otherwise,your friend is very afraid of spiders and all "bugs," which to her means insects.When you note that spiders are not insects,she claims they are the same thing.You finally convince her that spiders are not insects because,for one thing,spiders

Correct Answer
verified

What is the correct sequence of stages in the life cycle of the Chinese liver fluke?

Correct Answer
verified
B

Suppose you discover a new species of animal that does not have body segments,but is triploblastic,coelomate,and cephalized.Under the molecular phylogenetic scheme,you would allocate it to which phylum?

Correct Answer
verified
A

In earthworms,what do the nerve cord,the setae,the circular muscles,and the metanephridia have in common?

Correct Answer
verified

What is the primary characteristic that groups phyla within the Ecdysozoa?

Correct Answer
verified

A horseshoe-shaped crown of tentacles used by many invertebrates for feeding is called a

Correct Answer
verified

Triploblastic animals are animals that

Correct Answer
verified

Radiata have neither an anterior end nor a posterior end.

Correct Answer
verified

The protrusible rasping organ in a mollusk's mouth that is used to scrape food from the substrate is

Correct Answer
verified

Exam 25: Animal Diversity: Invertebrates

What does the mesoderm have to do with the designation of a true coelom?

Correct AnswerverifiedShow Answer

Match each insect order with the correct representative insects.

Which feature do Bryozoans possess that brachiopods lack?

Correct AnswerverifiedShow Answer

You are examining a new animal species.You find that you can pass a line through any longitudinal plane and find equal halves.Evaluate the symmetry of this animal.

Correct AnswerverifiedShow Answer

A distinctive type of larva shared by several phyla of invertebrates and considered to be important in phylogeny is the

Correct AnswerverifiedShow Answer

The diversification of insects is related to the diversification of food sources in the environment.

Correct AnswerverifiedTrue

What is a characteristic of most animals?

Correct AnswerverifiedShow Answer

Describe the route of water through a sponge.

Correct AnswerverifiedShow Answer

An acoelomate is an animal that

Correct AnswerverifiedShow Answer

The nervous system of a cnidarian consists of a central ganglion leading into a nerve net.

Correct AnswerverifiedShow Answer

What is a valid distinction between a blastocoel,an archenteron,and a coelom?

Correct AnswerverifiedShow Answer

Despite your best attempts to convince her otherwise,your friend is very afraid of spiders and all "bugs," which to her means insects.When you note that spiders are not insects,she claims they are the same thing.You finally convince her that spiders are not insects because,for one thing,spiders

Correct AnswerverifiedShow Answer

What is the correct sequence of stages in the life cycle of the Chinese liver fluke?

Correct AnswerverifiedB

Suppose you discover a new species of animal that does not have body segments,but is triploblastic,coelomate,and cephalized.Under the molecular phylogenetic scheme,you would allocate it to which phylum?

Correct AnswerverifiedA

In earthworms,what do the nerve cord,the setae,the circular muscles,and the metanephridia have in common?

Correct AnswerverifiedShow Answer

What is the primary characteristic that groups phyla within the Ecdysozoa?

Correct AnswerverifiedShow Answer

A horseshoe-shaped crown of tentacles used by many invertebrates for feeding is called a

Correct AnswerverifiedShow Answer

Triploblastic animals are animals that

Correct AnswerverifiedShow Answer

Radiata have neither an anterior end nor a posterior end.

Correct AnswerverifiedShow Answer

The protrusible rasping organ in a mollusk's mouth that is used to scrape food from the substrate is

Correct AnswerverifiedShow Answer

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True

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B

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A

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