Question 1

An organism with three distinct germ layers is termed _______________.

Accepted Answer

The answer of An organism with three distinct germ layers...

Question 2

Several pseudocoelomate groups have a constant number of cells or nuclei in the adults of a given species.This condition is known as ________.

Accepted Answer

The answer of Several pseudocoelomate groups have a constant number...

Question 3

Rotifers

Accepted Answer

A) are primarily marine. 
B) are dioecious. 
C) lack an excretory system. 
D) lack a digestive tract. 
A) are primarily marine. 
B) are dioecious. 
C) lack an excretory system. 
D) lack a digestive tract.

Question 4

The flatworms are more derived (or advanced)than the cnidarians because of their

Accepted Answer

A) circulatory and digestive systems. 
B) circulatory and respiratory systems. 
C) excretory and nervous systems. 
D) respiratory and digestive systems. 
A) circulatory and digestive systems. 
B) circulatory and respiratory systems. 
C) excretory and nervous systems. 
D) respiratory and digestive systems.

Question 5

Since flatworms and ribbon worms lack a coelom or a pseudocoel,they are termed ____________ animals.

Accepted Answer

The answer of Since flatworms and ribbon worms lack a...

Question 6

The mastax of a rotifer is used for

Accepted Answer

A) respiration. 
B) grinding food. 
C) swimming. 
D) pumping blooD. 
A) respiration. 
B) grinding food. 
C) swimming. 
D) pumping blooD.

Question 7

In contrast to other flatworms,tapeworms lack a ___________________.

Accepted Answer

The answer of In contrast to other flatworms,tapeworms lack a...

Question 8

The acoelomates are the simplest animals with three germ layers,bilateral symmetry,and an organ-system level of organization.

Accepted Answer

A) True 
 B)False

Question 9

Turbellarians have rod-shaped ____________ in the epidermis which produce mucous.

Accepted Answer

The answer of Turbellarians have rod-shaped ____________ in the epidermis...

Question 10

The holdfast of a tapeworm is its ______________.

Accepted Answer

The answer of The holdfast of a tapeworm is its...

Question 11

Because of their body shape and metabolic requirements,early flatworms must have been well predisposed toward _______________.

Accepted Answer

The answer of Because of their body shape and metabolic...

Question 12

The repeated reproductive units of tapeworms are known as ________________.

Accepted Answer

The answer of The repeated reproductive units of tapeworms are...

Question 13

Asexually reproducing stages of digeneans in their snail hosts are the _______________ and ___________________.

Accepted Answer

The answer of Asexually reproducing stages of digeneans in their...

Question 14

Adult tapeworms live in the digestive tract of vertebrates.

Accepted Answer

A) True 
 B)False

Question 15

The posterior attachment organ of monogeneans is the ________________.

Accepted Answer

The answer of The posterior attachment organ of monogeneans is...

Question 16

A number of Digenea are parasites of domestic animals and humans.

Accepted Answer

A) True 
 B)False

Question 17

A pseudocoelom allows for which of the following?

Accepted Answer

A) Greater freedom of movement 
B) Space for development and differentiation of digestive,excretory and reproductive systems 
C) A simple means of circulation 
D) A storage place for waste products to be discharged to the outside 
E) All of the above are true.
Fill in the Blank Questions 
A) Greater freedom of movement 
B) Space for development and differentiation of digestive,excretory and reproductive systems 
C) A simple means of circulation 
D) A storage place for waste products to be discharged to the outside 
E) All of the above are true.
Fill in the Blank Questions

Question 18

Most turbellarian flatworms are free-living,but the flukes and tapeworms are all parasitic.

Accepted Answer

A) True 
 B)False

Question 19

Eggs of rotifers that are unfertilized and develop parthenogenetically only into females are described as _________,while those that undergo meiosis and are haploid are ___________.

Accepted Answer

The answer of Eggs of rotifers that are unfertilized and...

Question 20

Humans become infected with Taenia saginatus when they

Accepted Answer

A) eat poorly cooked fish. 
B) eat poorly cooked pork. 
C) eat poorly cooked beef. 
D) all of these 
A) eat poorly cooked fish. 
B) eat poorly cooked pork. 
C) eat poorly cooked beef. 
D) all of these

An organism with three distinct germ layers is termed _______________.

Several pseudocoelomate groups have a constant number of cells or nuclei in the adults of a given species.This condition is known as ________.

Rotifers

The flatworms are more derived (or advanced)than the cnidarians because of their

Since flatworms and ribbon worms lack a coelom or a pseudocoel,they are termed ____________ animals.

The mastax of a rotifer is used for

In contrast to other flatworms,tapeworms lack a ___________________.

The acoelomates are the simplest animals with three germ layers,bilateral symmetry,and an organ-system level of organization.

Turbellarians have rod-shaped ____________ in the epidermis which produce mucous.

The holdfast of a tapeworm is its ______________.

Because of their body shape and metabolic requirements,early flatworms must have been well predisposed toward _______________.

The repeated reproductive units of tapeworms are known as ________________.

Asexually reproducing stages of digeneans in their snail hosts are the _ and _____.

Adult tapeworms live in the digestive tract of vertebrates.

The posterior attachment organ of monogeneans is the ________________.

A number of Digenea are parasites of domestic animals and humans.

A pseudocoelom allows for which of the following?

Most turbellarian flatworms are free-living,but the flukes and tapeworms are all parasitic.

Eggs of rotifers that are unfertilized and develop parthenogenetically only into females are described as _,while those that undergo meiosis and are haploid are ___.

Humans become infected with Taenia saginatus when they

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

An organism with three distinct germ layers is termed _______________.

Several pseudocoelomate groups have a constant number of cells or nuclei in the adults of a given species.This condition is known as ________.

Rotifers

The flatworms are more derived (or advanced)than the cnidarians because of their

Since flatworms and ribbon worms lack a coelom or a pseudocoel,they are termed ____________ animals.

The mastax of a rotifer is used for

In contrast to other flatworms,tapeworms lack a ___________________.

The acoelomates are the simplest animals with three germ layers,bilateral symmetry,and an organ-system level of organization.

Turbellarians have rod-shaped ____________ in the epidermis which produce mucous.

The holdfast of a tapeworm is its ______________.

Because of their body shape and metabolic requirements,early flatworms must have been well predisposed toward _______________.

The repeated reproductive units of tapeworms are known as ________________.

Asexually reproducing stages of digeneans in their snail hosts are the _______________ and ___________________.

Adult tapeworms live in the digestive tract of vertebrates.

The posterior attachment organ of monogeneans is the ________________.

A number of Digenea are parasites of domestic animals and humans.

A pseudocoelom allows for which of the following?

Most turbellarian flatworms are free-living,but the flukes and tapeworms are all parasitic.

Eggs of rotifers that are unfertilized and develop parthenogenetically only into females are described as _________,while those that undergo meiosis and are haploid are ___________.

Humans become infected with Taenia saginatus when they

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

Asexually reproducing stages of digeneans in their snail hosts are the _ and _____.

Eggs of rotifers that are unfertilized and develop parthenogenetically only into females are described as _,while those that undergo meiosis and are haploid are ___.