Question 1

The brachiopods live in

Accepted Answer

A)  freshwater sediment. 
B)  bivalved shells they secrete. 
C)  colonies and form protective masses. 
D)  secreted tubes in sand or attached to rocks. 
E)  echinoderm intestines as parasites. 
A)  freshwater sediment. 
B)  bivalved shells they secrete. 
C)  colonies and form protective masses. 
D)  secreted tubes in sand or attached to rocks. 
E)  echinoderm intestines as parasites. B

Question 2

Colonies of Ectoprocts begin from a single zooid called an _____________.

Accepted Answer

ancestrula

Question 3

The pedicel of a brachiopod functions

Accepted Answer

A)  as a lophophore. 
B)  to close the two shells. 
C)  as a stalk to attach it to the substrate. 
D)  as a respiratory structure. 
E)  in reproduction. 
A)  as a lophophore. 
B)  to close the two shells. 
C)  as a stalk to attach it to the substrate. 
D)  as a respiratory structure. 
E)  in reproduction. C

Question 4

A lophophorate phylum that is primarily marine,but also has some freshwater members is ____________ (Bryozoa).

Accepted Answer

The answer of A lophophorate phylum that is primarily marine,but...

Question 5

Ectoprocta

Accepted Answer

A)  live in both marine and freshwater habitats. 
B)  form colonies. 
C)  resemble cnidarian hydroids. 
D)  excludes the entoprocts. 
E)  All of these choices are correct 
A)  live in both marine and freshwater habitats. 
B)  form colonies. 
C)  resemble cnidarian hydroids. 
D)  excludes the entoprocts. 
E)  All of these choices are correct

Question 6

The _________ is the secreted body wall of an ectoproct,together with its secreted exoskeleton.

Accepted Answer

A)  Adhesive sac 
B)  Statoblast 
C)  Cystid 
D)  Polypide 
E)  Zoecium 
A)  Adhesive sac 
B)  Statoblast 
C)  Cystid 
D)  Polypide 
E)  Zoecium

Question 7

How can you distinguish an ectoproct from a hydroid?

Accepted Answer

A)  The hydroid colony is very small, perhaps a few millimeters long, while the ectoproct is centimeters long 
B)  The hydroid has the anus within the tentacular crown and the ectoproct has the anus outside the crown 
C)  The hydroid lacks any complex digestive gut including any anus 
D)  The hydroid has more complex musculature and innervation 
E)  Only hydroids form moss-like colonies 
A)  The hydroid colony is very small, perhaps a few millimeters long, while the ectoproct is centimeters long 
B)  The hydroid has the anus within the tentacular crown and the ectoproct has the anus outside the crown 
C)  The hydroid lacks any complex digestive gut including any anus 
D)  The hydroid has more complex musculature and innervation 
E)  Only hydroids form moss-like colonies

Question 8

"Lamp shells" are not included in Mollusca because they

Accepted Answer

A)  clearly do not resemble any mollusk. 
B)  lack a hard shell. 
C)  have a dorsal-ventral shell and gather food on tentacles. 
D)  lack a coelom. 
E)  have a fossil record that shows they are totally unrelated. 
A)  clearly do not resemble any mollusk. 
B)  lack a hard shell. 
C)  have a dorsal-ventral shell and gather food on tentacles. 
D)  lack a coelom. 
E)  have a fossil record that shows they are totally unrelated.

Question 9

Which is NOT a correct description of the function of the phoronid lophophore?

Accepted Answer

A)  It can be extended for feeding and completely withdrawn for protection 
B)  The mouth lies between the two ridges of the lophophore 
C)  Each ridge of a lophophore has hollow ciliated tentacles that are extensions of the body wall 
D)  Cilia on the tentacles direct the water current down the ridges and toward the mouth 
E)  All of the choices are correct 
A)  It can be extended for feeding and completely withdrawn for protection 
B)  The mouth lies between the two ridges of the lophophore 
C)  Each ridge of a lophophore has hollow ciliated tentacles that are extensions of the body wall 
D)  Cilia on the tentacles direct the water current down the ridges and toward the mouth 
E)  All of the choices are correct

Question 10

Ectoprocta live in

Accepted Answer

A)  only freshwater sediment. 
B)  bivalved shells they secrete. 
C)  colonies and form protective masses. 
D)  secreted tubes in sand or attached to rocks. 
E)  echinoderm intestines as parasites. 
A)  only freshwater sediment. 
B)  bivalved shells they secrete. 
C)  colonies and form protective masses. 
D)  secreted tubes in sand or attached to rocks. 
E)  echinoderm intestines as parasites.

Question 11

Why are entoprocts not included with the ectoprocts since they look nearly identical and were both called bryozoans in earlier times?

Accepted Answer

A)  Entoprocts are now known to be cnidarians 
B)  Entoprocts are acoelomates and lack sexual reproduction 
C)  Entoprocts are all parasites that lost more advanced characters and only secondarily resemble ectoprocts 
D)  The fossil record shows they were never related 
E)  Entoprocts are pseudocoelomates and have the anus within the tentacular crown 
A)  Entoprocts are now known to be cnidarians 
B)  Entoprocts are acoelomates and lack sexual reproduction 
C)  Entoprocts are all parasites that lost more advanced characters and only secondarily resemble ectoprocts 
D)  The fossil record shows they were never related 
E)  Entoprocts are pseudocoelomates and have the anus within the tentacular crown

Question 12

Compare lophotrochozoans developmental features.Do they share a similar body plan?

Accepted Answer

Lophotrochozoans are a diverse group of

Question 13

Explain why ectoprocts and entoprocts are no longer considered in the phylum Bryozoa.

Accepted Answer

The answer of Explain why ectoprocts and entoprocts are no...

Question 14

The lophophorate animals that have their bodies covered by a mantle belong to the phylum ________.

Accepted Answer

The answer of The lophophorate animals that have their bodies...

Question 15

The coelom of a lophophorate is divided into

Accepted Answer

A)  two parts: the anteriocoel and posteriocoel. 
B)  three parts: the protocoel, mesocoel, and metacoel. 
C)  four parts: the left and right supracoel and subcoel. 
D)  two parts: the basicoel and the exterocoel extending into the tentacles. 
E)  a interior hypocoel and a surrounding pericoel. 
A)  two parts: the anteriocoel and posteriocoel. 
B)  three parts: the protocoel, mesocoel, and metacoel. 
C)  four parts: the left and right supracoel and subcoel. 
D)  two parts: the basicoel and the exterocoel extending into the tentacles. 
E)  a interior hypocoel and a surrounding pericoel.

Question 16

The formation of the coelom in articulate brachiopods is by _____________ development.

Accepted Answer

The answer of The formation of the coelom in articulate...

Question 17

Brachiopods reproduce and develop

Accepted Answer

A)  with separate sexes. 
B)  usually with external fertilization. 
C)  with radial cleavage. 
D)  both with and without metamorphosis. 
E)  All of the choices are correct 
A)  with separate sexes. 
B)  usually with external fertilization. 
C)  with radial cleavage. 
D)  both with and without metamorphosis. 
E)  All of the choices are correct

Question 18

The phoronid circulatory system:

Accepted Answer

A)  is a closed system but lacks a heart. 
B)  has hemoglobin dissolved in the plasma. 
C)  is an open system with pulsatile organs circulating the hemolymph. 
D)  is an open system with no heart and is dependent upon the hemoglobin enclosed in nucleated cells. 
E)  is missing and all food and wastes readily diffuse through the lophophore. 
A)  is a closed system but lacks a heart. 
B)  has hemoglobin dissolved in the plasma. 
C)  is an open system with pulsatile organs circulating the hemolymph. 
D)  is an open system with no heart and is dependent upon the hemoglobin enclosed in nucleated cells. 
E)  is missing and all food and wastes readily diffuse through the lophophore.

Question 19

Brachiopoda

Accepted Answer

A)  are called bryozoans. 
B)  have a mantle and two valves (shells. 
C)  live in deep ocean bottoms. 
D)  are wormlike burrowers. 
E)  are colonial. 
A)  are called bryozoans. 
B)  have a mantle and two valves (shells. 
C)  live in deep ocean bottoms. 
D)  are wormlike burrowers. 
E)  are colonial.

Question 20

Why are these groups with diverse lifestyles (some with shells and some without,some colonial and some solitary,etc.)considered together? Be sure to list the structures and behaviors they have in common and discuss their evolutionary relationships.

Accepted Answer

These groups with diverse lifestyles are

Exam 15: Polyzoa and Kryptrochozoa

The brachiopods live in

Colonies of Ectoprocts begin from a single zooid called an _____________.

The pedicel of a brachiopod functions

A lophophorate phylum that is primarily marine,but also has some freshwater members is ____________ (Bryozoa).

Ectoprocta

The _________ is the secreted body wall of an ectoproct,together with its secreted exoskeleton.

How can you distinguish an ectoproct from a hydroid?

"Lamp shells" are not included in Mollusca because they

Which is NOT a correct description of the function of the phoronid lophophore?

Ectoprocta live in

Why are entoprocts not included with the ectoprocts since they look nearly identical and were both called bryozoans in earlier times?

Compare lophotrochozoans developmental features.Do they share a similar body plan?

Explain why ectoprocts and entoprocts are no longer considered in the phylum Bryozoa.

The lophophorate animals that have their bodies covered by a mantle belong to the phylum ________.

The coelom of a lophophorate is divided into

The formation of the coelom in articulate brachiopods is by _____________ development.

Brachiopods reproduce and develop

The phoronid circulatory system:

Brachiopoda

Why are these groups with diverse lifestyles (some with shells and some without,some colonial and some solitary,etc.)considered together? Be sure to list the structures and behaviors they have in common and discuss their evolutionary relationships.

Life: Biological Principles and the Science of Zoology

The Origin and Chemistry of Life

Cells As Units of Life

Cellular Metabolism

Genetics: a Review

Organic Evolution

The Reproductive Process

Principles of Development

Architectural Pattern of an Animal

Taxonomy and Phylogeny of Animals

Unicellular Eukaryotes

Sponges and Placozoans

Radiate Animals

Acoelomorpha,Platyzoa,and Mesozoa

Molluscs

Annelids and Allied Taxa

Smaller Ecdysozoans

Trilobites, Chelicerates, and Myriapods

Crustaceans

Support, Protection, and Movement

Chaetognaths, Echinoderms, and Hemichordates

Chordates

Fishes

Early Tetrapods and Modern Amphibians

Amniote Origins and Nonavian Reptiles

Birds

Mammals

Support, protection, and Movement

Homeostasis: Osmotic Regulation, Excretion, and Temperature Regulation

Homeostasis: Internal Fluids and Respiration

Digestion and Nutrition

Nervous Coordination: Nervous System and Sense Organs

Chemical Coordination: Endocrine System

Immunity

Animal Behavior

Animal Distributions

Animal Ecology

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