Question 1

Most annelids possess tiny bristles called __________.

Accepted Answer

setae

Question 2

Annelids are thought to be related to molluscs because

Accepted Answer

A) they have a similar nervous system. 
B) a shared metameric body plan though the mechanism of segmentation may be different. 
C) they both have a similar trochophore larva. 
D) all of these 
A) they have a similar nervous system. 
B) a shared metameric body plan though the mechanism of segmentation may be different. 
C) they both have a similar trochophore larva. 
D) all of these D

Question 3

Some echiurans are deposit feeders and some are suspension feeders.

Accepted Answer

A) True 
 B)False  True

Question 4

Most freshwater leeches are predators,but some are bloodsucking ectoparasites (micropredators).

Accepted Answer

A) True 
 B)False

Question 5

Leeches

Accepted Answer

A) are found mainly in fresh water. 
B) may be ectoparasites or micropredators. 
C) are hermaphroditiC. 
D) all of these 
A) are found mainly in fresh water. 
B) may be ectoparasites or micropredators. 
C) are hermaphroditiC. 
D) all of these

Question 6

The typical nervous system of annelids consists of

Accepted Answer

A) a brain and a ventral nerve cord. 
B) a ladder-like pattern. 
C) a nerve net. 
D) a brain,a ventral nerve cord,and a dorsal nerve corD. 
A) a brain and a ventral nerve cord. 
B) a ladder-like pattern. 
C) a nerve net. 
D) a brain,a ventral nerve cord,and a dorsal nerve corD.

Question 7

Sipunculids

Accepted Answer

A) are marine dwellers. 
B) live in burrows. 
C) have a trochophore larva. 
D) all of these 
A) are marine dwellers. 
B) live in burrows. 
C) have a trochophore larva. 
D) all of these

Question 8

The Errantia is the largest class of annelids.

Accepted Answer

A) True 
 B)False

Question 9

The most basal group of the Annelida is probably the ________________.

Accepted Answer

Errantia o

Question 10

Leeches typically lack both setae and septa.

Accepted Answer

A) True 
 B)False

Question 11

The following characteristics are typical of annelids:

Accepted Answer

A) segmentation,open circulation,and nephridiA. 
B) segmentation,closed circulation,and nephridia. 
C) no anus,nephridia,and coelom. 
D) nephridia,coelom,and open circulation. 
A) segmentation,open circulation,and nephridiA. 
B) segmentation,closed circulation,and nephridia. 
C) no anus,nephridia,and coelom. 
D) nephridia,coelom,and open circulation.

Question 12

The Errantia

Accepted Answer

A) belong to the smallest and most evolutionarily derived class of annelids. 
B) are mostly freshwater inhabitants. 
C) consist of active predators and sedentary particle feeders. 
D) are hermaphroditic. 
A) belong to the smallest and most evolutionarily derived class of annelids. 
B) are mostly freshwater inhabitants. 
C) consist of active predators and sedentary particle feeders. 
D) are hermaphroditic.

Question 13

The most diverse class of annelids is the earthworms.

Accepted Answer

A) True 
 B)False

Question 14

The Errantia have separate sexes,but the earthworms and leeches are hermaphroditic.

Accepted Answer

A) True 
 B)False

Question 15

The circulatory system in the earthworm

Accepted Answer

A) is absent. 
B) is an open type. 
C) uses the dorsal vessel as the main pumping organ. 
D) has no pumping structure and depends on the action of body muscles to move the blooD. 
A) is absent. 
B) is an open type. 
C) uses the dorsal vessel as the main pumping organ. 
D) has no pumping structure and depends on the action of body muscles to move the blooD.

Question 16

Reproduction in the earthworm involves

Accepted Answer

A) asexual budding. 
B) self-fertilization. 
C) cross-fertilization between two dioecious organisms. 
D) cross-fertilization between two hermaphroditic individuals. 
A) asexual budding. 
B) self-fertilization. 
C) cross-fertilization between two dioecious organisms. 
D) cross-fertilization between two hermaphroditic individuals.

Question 17

Echiurans

Accepted Answer

A) live in fresh water. 
B) have a proboscis used in feeding. 
C) are called water bears. 
D) have a lophophore used in feeding. 
A) live in fresh water. 
B) have a proboscis used in feeding. 
C) are called water bears. 
D) have a lophophore used in feeding.

Question 18

The cocoon in the earthworm is produced by the

Accepted Answer

A) clitellum. 
B) prostomium. 
C) calciferous glands. 
D) chloragogen cells. 
A) clitellum. 
B) prostomium. 
C) calciferous glands. 
D) chloragogen cells.

Question 19

Annelids may be characterized as protostomes,with spiral cleavage and mosaic development.

Accepted Answer

A) True 
 B)False

Question 20

Errantia differ from other annelids because errantia have

Accepted Answer

A) an indistinct head. 
B) parapodia. 
C) a clitellum. 
D) all of these 
A) an indistinct head. 
B) parapodia. 
C) a clitellum. 
D) all of these

Most annelids possess tiny bristles called __________.

Annelids are thought to be related to molluscs because

Some echiurans are deposit feeders and some are suspension feeders.

Most freshwater leeches are predators,but some are bloodsucking ectoparasites (micropredators).

Leeches

The typical nervous system of annelids consists of

Sipunculids

The Errantia is the largest class of annelids.

The most basal group of the Annelida is probably the ________________.

Leeches typically lack both setae and septa.

The following characteristics are typical of annelids:

The Errantia

The most diverse class of annelids is the earthworms.

The Errantia have separate sexes,but the earthworms and leeches are hermaphroditic.

The circulatory system in the earthworm

Reproduction in the earthworm involves

Echiurans

The cocoon in the earthworm is produced by the

Annelids may be characterized as protostomes,with spiral cleavage and mosaic development.

Errantia differ from other annelids because errantia have

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

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

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Exam 11: Annelids and Allied Taxa

Most annelids possess tiny bristles called __________.

Annelids are thought to be related to molluscs because

Some echiurans are deposit feeders and some are suspension feeders.

Most freshwater leeches are predators,but some are bloodsucking ectoparasites (micropredators).

Leeches

The typical nervous system of annelids consists of

Sipunculids

The Errantia is the largest class of annelids.

The most basal group of the Annelida is probably the ________________.

Leeches typically lack both setae and septa.

The following characteristics are typical of annelids:

The Errantia

The most diverse class of annelids is the earthworms.

The Errantia have separate sexes,but the earthworms and leeches are hermaphroditic.

The circulatory system in the earthworm

Reproduction in the earthworm involves

Echiurans

The cocoon in the earthworm is produced by the

Annelids may be characterized as protostomes,with spiral cleavage and mosaic development.

Errantia differ from other annelids because errantia have

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

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