Question 1

The hemichordates are

Accepted Answer

A) bottom-dwelling marine animals. 
B) deuterostomes. 
C) fairly worldwide in distribution. 
D) all of these 
A) bottom-dwelling marine animals. 
B) deuterostomes. 
C) fairly worldwide in distribution. 
D) all of these D

Question 2

The echinoids

Accepted Answer

A) have five long,slender arms. 
B) are enclosed in a test. 
C) do not have tube feet. 
D) have open ambulacral grooves. 
A) have five long,slender arms. 
B) are enclosed in a test. 
C) do not have tube feet. 
D) have open ambulacral grooves. B

Question 3

Sea cucumbers have an elongated body,and they typically lie on one side.

Accepted Answer

A) True 
 B)False  True

Question 4

A complex chewing apparatus found in many urchins is the _____________.

Accepted Answer

The answer of A complex chewing apparatus found in many...

Question 5

Of the two classes of Hemichordata,a crown of tentacles is borne by members of the class ___________________.

Accepted Answer

The answer of Of the two classes of Hemichordata,a crown...

Question 6

Class Asteroidea

Accepted Answer

A) have pentaradial symmetry. 
B) feeds on clams. 
C) feeds on other echinoderms. 
D) all of the above 
A) have pentaradial symmetry. 
B) feeds on clams. 
C) feeds on other echinoderms. 
D) all of the above

Question 7

The function of the papulae in the sea star is

Accepted Answer

A) respiration. 
B) excretion. 
C) reproduction. 
D) digestion. 
A) respiration. 
B) excretion. 
C) reproduction. 
D) digestion.

Question 8

According to recent reclassification,the Chaetognatha are now included in the Ecdysozoa.
Multiple Choice Questions

Accepted Answer

A) True 
 B)False

Question 9

Acornworms

Accepted Answer

A) are usually found in deep water zones. 
B) do not have hearts but do have blood vessels. 
C) have gill pores and gill slits. 
D) all of the above 
A) are usually found in deep water zones. 
B) do not have hearts but do have blood vessels. 
C) have gill pores and gill slits. 
D) all of the above

Question 10

Sea stars have light sensitive organs,the _____________,at the ends of their arms.

Accepted Answer

The answer of Sea stars have light sensitive organs,the _____________,at...

Question 11

Echinoderms have the ability to osmoregulate regardless of the salinity of the water and are thus found in marine and brackish waters.

Accepted Answer

A) True 
 B)False

Question 12

The mouth of the brittle star is surrounded by five movable plates that serve as _________.

Accepted Answer

The answer of The mouth of the brittle star is...

Question 13

The fossil record indicates crinoids are more numerous now than during prehistoric times.

Accepted Answer

A) True 
 B)False

Question 14

A unique characteristic of echinoderms is

Accepted Answer

A) the endoskeleton of plates or ossicles. 
B) the water-vascular system. 
C) pedicellariae. 
D) all of these 
A) the endoskeleton of plates or ossicles. 
B) the water-vascular system. 
C) pedicellariae. 
D) all of these

Question 15

The ancestor of the echinoderms had __________ symmetry.

Accepted Answer

The answer of The ancestor of the echinoderms had __________...

Question 16

The Class ______________ have internal respiratory trees and can eject Cuvierian tubules for defense.

Accepted Answer

The answer of The Class ______________ have internal respiratory trees...

Question 17

The larvae of echinoderms have __________ symmetry.

Accepted Answer

The answer of The larvae of echinoderms have __________ symmetry....

Question 18

The water vascular system of sea stars opens to the outside through the madreporite.

Accepted Answer

A) True 
 B)False

Question 19

The five pairs of bursae in brittle stars are used for

Accepted Answer

A) digestion and excretion. 
B) respiration and reproduction. 
C) reproduction and digestion. 
D) circulation and digestion. 
A) digestion and excretion. 
B) respiration and reproduction. 
C) reproduction and digestion. 
D) circulation and digestion.

Question 20

During metamorphosis of sea stars,the left side of the larva becomes the __________ surface of the adult,and the right side becomes the _____________ surface.

Accepted Answer

The answer of During metamorphosis of sea stars,the left side...

The hemichordates are

The echinoids

Sea cucumbers have an elongated body,and they typically lie on one side.

A complex chewing apparatus found in many urchins is the _____________.

Of the two classes of Hemichordata,a crown of tentacles is borne by members of the class ___________________.

Class Asteroidea

The function of the papulae in the sea star is

According to recent reclassification,the Chaetognatha are now included in the Ecdysozoa. Multiple Choice Questions

Acornworms

Sea stars have light sensitive organs,the _____________,at the ends of their arms.

Echinoderms have the ability to osmoregulate regardless of the salinity of the water and are thus found in marine and brackish waters.

The mouth of the brittle star is surrounded by five movable plates that serve as _________.

The fossil record indicates crinoids are more numerous now than during prehistoric times.

A unique characteristic of echinoderms is

The ancestor of the echinoderms had __________ symmetry.

The Class ______________ have internal respiratory trees and can eject Cuvierian tubules for defense.

The larvae of echinoderms have __________ symmetry.

The water vascular system of sea stars opens to the outside through the madreporite.

The five pairs of bursae in brittle stars are used for

During metamorphosis of sea stars,the left side of the larva becomes the surface of the adult,and the right side becomes the ___ surface.

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

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

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

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Arthropods

Vertebrate Beginnings: the Chordates

Fishes

The Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Filters

Exam 14: Chaetognaths, Echinoderms, and Hemichordates

The hemichordates are

The echinoids

Sea cucumbers have an elongated body,and they typically lie on one side.

A complex chewing apparatus found in many urchins is the _____________.

Of the two classes of Hemichordata,a crown of tentacles is borne by members of the class ___________________.

Class Asteroidea

The function of the papulae in the sea star is

According to recent reclassification,the Chaetognatha are now included in the Ecdysozoa. Multiple Choice Questions

Acornworms

Sea stars have light sensitive organs,the _____________,at the ends of their arms.

Echinoderms have the ability to osmoregulate regardless of the salinity of the water and are thus found in marine and brackish waters.

The mouth of the brittle star is surrounded by five movable plates that serve as _________.

The fossil record indicates crinoids are more numerous now than during prehistoric times.

A unique characteristic of echinoderms is

The ancestor of the echinoderms had __________ symmetry.

The Class ______________ have internal respiratory trees and can eject Cuvierian tubules for defense.

The larvae of echinoderms have __________ symmetry.

The water vascular system of sea stars opens to the outside through the madreporite.

The five pairs of bursae in brittle stars are used for

During metamorphosis of sea stars,the left side of the larva becomes the __________ surface of the adult,and the right side becomes the _____________ surface.

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

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

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

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Arthropods

Vertebrate Beginnings: the Chordates

Fishes

The Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Filters

During metamorphosis of sea stars,the left side of the larva becomes the surface of the adult,and the right side becomes the ___ surface.