Question 1

All Platyhelminthes are parasitic.

Accepted Answer

A) True 
 B)False

Question 2

Attribute one of these statements to the blastopore.

Accepted Answer

A)  It is the opening from the blastocoel to the outside.
B)  It is the opening from the digestive tract to the inside.
C)  It can develop into the brain in some animals.
D)  It can develop into the gut in some animals.
E)  It occurs in both protostomes and deuterostomes.

Question 3

Gastrulation is brought about by an invagination of the blastula.

Accepted Answer

A) True 
 B)False

Question 4

The change of a larval form of insect to a different adult form is known as

Accepted Answer

A)  tagmosis.
B)  incomplete metamorphosis.
C)  complete metamorphosis.
D)  an instar.
E)  a chrysalis.

Question 5

Compare a pseudocoelom to a coelom.

Accepted Answer

A)  A coelom is completely enclosed by mesoderm whereas a pseudocoelom has an outer covering of mesoderm and an inner one of endoderm.
B)  A pseudocoelom is completely enclosed by mesoderm whereas a coelom has an outer covering of mesoderm and an inner one of endoderm.
C)  The coelom is enclosed by ectoderm and the pseudocoelom is enclosed by endoderm.
D)  The pseudocoelom is enclosed by ectoderm and the coelom is enclosed by endoderm.
E)  The coelom is enclosed by ectoderm and the pseudocoelom is enclosed by mesoderm.

Question 6

Ecdysis is

Accepted Answer

A)  development of the ectoderm layer in the gastrulA.
B)  development of the epidermis from the ectoderm.
C)  disintegration of the ectoderm.
D)  molting of the exoskeleton.
E)  the feeding tentacles of the Ecdysozoa.

Question 7

Gastrulation is the development of the gastrula into an embryo.

Accepted Answer

A) True 
 B)False

Question 8

If you conducted an experiment in which you took a complete animal that had no germ layers and strained it through a fine-mesh cloth so that all its cells separated,then you placed all the cells together and they reunited to form a new animal,to which phylum would that animal likely belong? (This was an actual experiment. )

Accepted Answer

A)  Platyhelminthes
B)  Porifera
C)  Ctenophora
D)  Nematoda
E)  Arthropoda

Question 9

In which part of a sponge's body does fertilization occur?

Accepted Answer

A)  the ostium
B)  the mesohyl
C)  the spicule
D)  the spongin
E)  the amoebocyte

Question 10

Germ layers are

Accepted Answer

A)  layers infected with bacteriA.
B)  embryonic layers with different developmental potentials.
C)  layers of cells surrounding the egg prior to fertilization.
D)  colonial protists arranged in layers.
E)  layers of gametes.

Question 11

Cephalization is

Accepted Answer

A)  embryonic development of the head in advance of the rest of the body.
B)  concentration of the sensory organs on the posterior end of the body.
C)  concentration of the sensory organs on the anterior end of the body.
D)  an evolutionary degeneration of the head as seen in some parasites.
E)  a malformation of the head.

Question 12

The choanocytes have a flagellum that moves water through the sponge and a collar that extracts food particles from the water.In what group have you encountered very similar cells before?

Accepted Answer

A)  the choanoflagellates
B)  the chytrids
C)  the Euglenozoa
D)  the charophytes
E)  the Foraminifera

Question 13

The recent reassessment of animal classification is the result of

Accepted Answer

A)  new data from Carl Linnaeus.
B)  comparisons of DNA and rRNA among different taxa.
C)  new,genetically engineered species.
D)  developing resistance to antibiotics.
E)  new morphological data.

Question 14

Although a medusa and a polyp look different,they have similar body plans.

Accepted Answer

A) True 
 B)False

Question 15

The animal kingdom is a monophyletic grouping.

Accepted Answer

A) True 
 B)False

Question 16

Predict what would happen to a sponge that could no longer produce spicules.

Accepted Answer

A)  Intracellular digestion would cease.
B)  Water circulation would be greatly impeded.
C)  Gametes could no longer be produced.
D)  Vulnerability to predation would increase.

Question 17

Match between columns
                        Premises: movement
houses organs
secretes the shell
houses gills

Accepted Answer

The Answer of foot and mantle cavity and visceral mass is...

Question 18

The tracheae of adult terrestrial insects have been a factor in the great abundance of insects because they serve the same function in terms of the delivery of respiratory gases to the cells as do

Accepted Answer

A)  the gills of aquatic insects.
B)  the lungs of mammals.
C)  the book lungs of spiders.
D)  the closed circulatory system of cephalopods.
E)  the Malphigian tubules of spiders.

Question 19

You are presented with an animal that resembles a jellyfish.As you examine it further,what characteristic would allow you to conclude that it belongs to the Phylum Ctenophora rather than the Phylum Cnidaria?

Accepted Answer

A)  complete digestive tract
B)  tentacles
C)  gonads
D)  stinging cells

Question 20

Match between columns
                        Premises: Gastropoda
Polyplacophora
Bivalvia
Cephalopoda

Accepted Answer

The Answer of clams and chitons and snails and nautili is...

Exam 25: Animal Diversity: Invertebrates

Predict what would happen to a sponge that could no longer produce spicules.

Correct Answer
verified

Germ layers are

Correct Answer
verified

In which part of a sponge's body does fertilization occur?

Correct Answer
verified

Gastrulation is brought about by an invagination of the blastula.

Correct Answer
verified

The recent reassessment of animal classification is the result of

Correct Answer
verified

The tracheae of adult terrestrial insects have been a factor in the great abundance of insects because they serve the same function in terms of the delivery of respiratory gases to the cells as do

Correct Answer
verified

Ecdysis is

Correct Answer
verified

Although a medusa and a polyp look different,they have similar body plans.

Correct Answer
verified

All Platyhelminthes are parasitic.

Correct Answer
verified

You are presented with an animal that resembles a jellyfish.As you examine it further,what characteristic would allow you to conclude that it belongs to the Phylum Ctenophora rather than the Phylum Cnidaria?

Correct Answer
verified

The change of a larval form of insect to a different adult form is known as

Correct Answer
verified

The animal kingdom is a monophyletic grouping.

Correct Answer
verified

Match the molluscan body part to its function.

Correct Answer
verified

Compare a pseudocoelom to a coelom.

Correct Answer
verified

The choanocytes have a flagellum that moves water through the sponge and a collar that extracts food particles from the water.In what group have you encountered very similar cells before?

Correct Answer
verified

Match each mollusk with the correct taxonomic class.

Gastrulation is the development of the gastrula into an embryo.

Correct Answer
verified

Attribute one of these statements to the blastopore.

Correct Answer
verified

Cephalization is

Correct Answer
verified

Exam 25: Animal Diversity: Invertebrates

Predict what would happen to a sponge that could no longer produce spicules.

Correct AnswerverifiedShow Answer

Germ layers are

Correct AnswerverifiedShow Answer

In which part of a sponge's body does fertilization occur?

Correct AnswerverifiedShow Answer

Gastrulation is brought about by an invagination of the blastula.

Correct AnswerverifiedShow Answer

The recent reassessment of animal classification is the result of

Correct AnswerverifiedShow Answer

The tracheae of adult terrestrial insects have been a factor in the great abundance of insects because they serve the same function in terms of the delivery of respiratory gases to the cells as do

Correct AnswerverifiedShow Answer

Ecdysis is

Correct AnswerverifiedShow Answer

Although a medusa and a polyp look different,they have similar body plans.

Correct AnswerverifiedShow Answer

All Platyhelminthes are parasitic.

Correct AnswerverifiedShow Answer

You are presented with an animal that resembles a jellyfish.As you examine it further,what characteristic would allow you to conclude that it belongs to the Phylum Ctenophora rather than the Phylum Cnidaria?

Correct AnswerverifiedShow Answer

The change of a larval form of insect to a different adult form is known as

Correct AnswerverifiedShow Answer

The animal kingdom is a monophyletic grouping.

Correct AnswerverifiedShow Answer

Match the molluscan body part to its function.

Correct AnswerverifiedShow Answer

Compare a pseudocoelom to a coelom.

Correct AnswerverifiedShow Answer

The choanocytes have a flagellum that moves water through the sponge and a collar that extracts food particles from the water.In what group have you encountered very similar cells before?

Correct AnswerverifiedShow Answer

Match each mollusk with the correct taxonomic class.

Gastrulation is the development of the gastrula into an embryo.

Correct AnswerverifiedShow Answer

Attribute one of these statements to the blastopore.

Correct AnswerverifiedShow Answer

Cephalization is

Correct AnswerverifiedShow Answer

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