Question 1

Humans become infected with liver flukes by

Accepted Answer

A) eating infected raw fish. 
B) eating infected snails. 
C) drinking water contaminated with eggs. 
D) swimming in infected waters. 
A) eating infected raw fish. 
B) eating infected snails. 
C) drinking water contaminated with eggs. 
D) swimming in infected waters. A

Question 2

The pseudocoelomates include the cnidarians,the rotifers and the gnathostomulids.

Accepted Answer

A) True 
 B)False  False

Question 3

All pseudocoelomate organisms have a complete digestive tract.

Accepted Answer

A) True 
 B)False  False

Question 4

Most individual turbellarians contain organs of both sexes and are thus termed _____________.

Accepted Answer

monoecious

Question 5

"Ectolecithal" describes a situation in which

Accepted Answer

A) there is no yolk. 
B) yolk is contained in separate cells outside the zygote. 
C) yolk is concentrated at one end of the zygote. 
D) yolk is found around the perimeter of the zygote. 
A) there is no yolk. 
B) yolk is contained in separate cells outside the zygote. 
C) yolk is concentrated at one end of the zygote. 
D) yolk is found around the perimeter of the zygote.

Question 6

Gastrotrichs are large,wormlike animals.

Accepted Answer

A) True 
 B)False

Question 7

The Acanthocephala are nonparasitic,freshwater worms.

Accepted Answer

A) True 
 B)False

Question 8

Flatworms have three germ layers: ectoderm,mesoderm,and endoderm.

Accepted Answer

A) True 
 B)False

Question 9

Two distinctive features of Acanthocephala are a spiny proboscis and a _______________ system.

Accepted Answer

The answer of Two distinctive features of Acanthocephala are a...

Question 10

Acanthocephalans

Accepted Answer

A) parasitize fish,birds,and mammals. 
B) are monoecious. 
C) have a well-developed digestive tract. 
D) are found in the host's liver. 
A) parasitize fish,birds,and mammals. 
B) are monoecious. 
C) have a well-developed digestive tract. 
D) are found in the host's liver.

Question 11

Digenetic trematodes typically have a vertebrate as the definitive host and a mollusc as the intermediate host.

Accepted Answer

A) True 
 B)False

Question 12

The term tegument is most appropriate for reference to the living outer layer of flatworms.

Accepted Answer

A) True 
 B)False

Question 13

The main body of the cestode is the ______________.

Accepted Answer

strobila,o

Question 14

The main ill effects in schistosomiasis result from damage done by the adult worms.

Accepted Answer

A) True 
 B)False

Question 15

Radial symmetry and cephalization evolved together in the acoelomate animals.

Accepted Answer

A) True 
 B)False

Question 16

Free-living flatworms have

Accepted Answer

A) ocelli. 
B) tactile cells. 
C) chemoreceptors. 
D) all of these 
A) ocelli. 
B) tactile cells. 
C) chemoreceptors. 
D) all of these

Question 17

The free-swimming,ciliated stage that hatches from a digenetic trematode egg is the ____________.

Accepted Answer

The answer of The free-swimming,ciliated stage that hatches from a...

Question 18

Mesodermal cells,known as ___________ cells,fill the space between muscles and visceral organs in flatworms.

Accepted Answer

The answer of Mesodermal cells,known as ___________ cells,fill the space...

Question 19

In flame cells

Accepted Answer

A) flagella drive fluid through tubules. 
B) digestion of proteins takes place. 
C) excretion of proteins is one important function. 
D) the heat is intense. 
A) flagella drive fluid through tubules. 
B) digestion of proteins takes place. 
C) excretion of proteins is one important function. 
D) the heat is intense.

Question 20

People become infected with Schisitosoma when ___________ penetrate the skin.

Accepted Answer

The answer of People become infected with Schisitosoma when ___________...

Humans become infected with liver flukes by

The pseudocoelomates include the cnidarians,the rotifers and the gnathostomulids.

All pseudocoelomate organisms have a complete digestive tract.

Most individual turbellarians contain organs of both sexes and are thus termed _____________.

"Ectolecithal" describes a situation in which

Gastrotrichs are large,wormlike animals.

The Acanthocephala are nonparasitic,freshwater worms.

Flatworms have three germ layers: ectoderm,mesoderm,and endoderm.

Two distinctive features of Acanthocephala are a spiny proboscis and a _______________ system.

Acanthocephalans

Digenetic trematodes typically have a vertebrate as the definitive host and a mollusc as the intermediate host.

The term tegument is most appropriate for reference to the living outer layer of flatworms.

The main body of the cestode is the ______________.

The main ill effects in schistosomiasis result from damage done by the adult worms.

Radial symmetry and cephalization evolved together in the acoelomate animals.

Free-living flatworms have

The free-swimming,ciliated stage that hatches from a digenetic trematode egg is the ____________.

Mesodermal cells,known as ___________ cells,fill the space between muscles and visceral organs in flatworms.

In flame cells

People become infected with Schisitosoma when ___________ penetrate the skin.

Science of Zoology and Evolution of Animal Diversity

Animal Ecology

Animal Architecture

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges: Phylum Porifera

Cnidarians and Ctenophores

Polyzoa and Kryptrochozoa: Cycliophora, Entoprocta, Ectoprocta, Brachiopoda, Phoronida, and Nemertea

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Arthropods

Chaetognaths, Echinoderms, and Hemichordates

Vertebrate Beginnings: the Chordates

Fishes

The Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Filters

Exam 8: Acoelomorpha, Platyzoa, and Mesozoa: Flatworms, Gastrotrichs, Gnathiferans, and Mesozoans

Humans become infected with liver flukes by

The pseudocoelomates include the cnidarians,the rotifers and the gnathostomulids.

All pseudocoelomate organisms have a complete digestive tract.

Most individual turbellarians contain organs of both sexes and are thus termed _____________.

"Ectolecithal" describes a situation in which

Gastrotrichs are large,wormlike animals.

The Acanthocephala are nonparasitic,freshwater worms.

Flatworms have three germ layers: ectoderm,mesoderm,and endoderm.

Two distinctive features of Acanthocephala are a spiny proboscis and a _______________ system.

Acanthocephalans

Digenetic trematodes typically have a vertebrate as the definitive host and a mollusc as the intermediate host.

The term tegument is most appropriate for reference to the living outer layer of flatworms.

The main body of the cestode is the ______________.

The main ill effects in schistosomiasis result from damage done by the adult worms.

Radial symmetry and cephalization evolved together in the acoelomate animals.

Free-living flatworms have

The free-swimming,ciliated stage that hatches from a digenetic trematode egg is the ____________.

Mesodermal cells,known as ___________ cells,fill the space between muscles and visceral organs in flatworms.

In flame cells

People become infected with Schisitosoma when ___________ penetrate the skin.

Science of Zoology and Evolution of Animal Diversity

Animal Ecology

Animal Architecture

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges: Phylum Porifera

Cnidarians and Ctenophores

Polyzoa and Kryptrochozoa: Cycliophora, Entoprocta, Ectoprocta, Brachiopoda, Phoronida, and Nemertea

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Arthropods

Chaetognaths, Echinoderms, and Hemichordates

Vertebrate Beginnings: the Chordates

Fishes

The Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Filters