Question 1

Bivalve mollusks

Accepted Answer

A)  Have a gill that is used only for feeding 
B)  Have a gill that is used often for both feeding and respiration 
C)  Respire by flapping the gill within the mantle cavity 
D)  Cannot use the gill in feeding 
A)  Have a gill that is used only for feeding 
B)  Have a gill that is used often for both feeding and respiration 
C)  Respire by flapping the gill within the mantle cavity 
D)  Cannot use the gill in feeding B

Question 2

Sponges feed by means of

Accepted Answer

A)  Currents formed by amoebocyte cells 
B)  Currents generated by muscular contraction 
C)  Currents formed by collar cells 
D)  External water currents only 
A)  Currents formed by amoebocyte cells 
B)  Currents generated by muscular contraction 
C)  Currents formed by collar cells 
D)  External water currents only C

Question 3

All sponges

Accepted Answer

A)  Reproduce exclusively asexually 
B)  Have sexual reproduction 
C)  Are diffuse organisms with no morphological organization 
D)  Are found only in coral reefs 
A)  Reproduce exclusively asexually 
B)  Have sexual reproduction 
C)  Are diffuse organisms with no morphological organization 
D)  Are found only in coral reefs B

Question 4

Benthic sea squirts are most closely related to

Accepted Answer

A)  The sponges 
B)  The vertebrates 
C)  The arthropods 
D)  Plants 
A)  The sponges 
B)  The vertebrates 
C)  The arthropods 
D)  Plants

Question 5

Annelids differ from nematodes in

Accepted Answer

A)  Having a complete digestion system 
B)  Being marine only 
C)  Having mouthparts 
D)  Having segments 
A)  Having a complete digestion system 
B)  Being marine only 
C)  Having mouthparts 
D)  Having segments

Question 6

Members of the Polychaeta

Accepted Answer

A)  Have parapodia 
B)  Lack setae 
C)  Are segmented, unlike the Oligochaeta 
D)  All of the above 
A)  Have parapodia 
B)  Lack setae 
C)  Are segmented, unlike the Oligochaeta 
D)  All of the above

Question 7

All arthropods share

Accepted Answer

A)  A calcified internal skeleton 
B)  A calcified external skeleton 
C)  An external skeleton composed of chitin 
D)  A strictly marine habitat 
A)  A calcified internal skeleton 
B)  A calcified external skeleton 
C)  An external skeleton composed of chitin 
D)  A strictly marine habitat

Question 8

The radula

Accepted Answer

A)  Is found in gastropods and chitons 
B)  Is found in gastropods and scaphopods 
C)  Is not found in chitons and bivalves 
D)  Is used only for locomotion in cephalopods 
A)  Is found in gastropods and chitons 
B)  Is found in gastropods and scaphopods 
C)  Is not found in chitons and bivalves 
D)  Is used only for locomotion in cephalopods

Question 9

Trilobites belong to

Accepted Answer

A)  The Crustacea 
B)  The Mollusca 
C)  The Annelida 
D)  The Arthropoda 
A)  The Crustacea 
B)  The Mollusca 
C)  The Annelida 
D)  The Arthropoda

Question 10

Flatworms have

Accepted Answer

A)  Many representatives that are parasitic 
B)  No structure capable of gathering food actively 
C)  A complete digestive tract with mouth and anus 
D)  Only free-living representatives 
A)  Many representatives that are parasitic 
B)  No structure capable of gathering food actively 
C)  A complete digestive tract with mouth and anus 
D)  Only free-living representatives

Question 11

Echinoderms differ from mollusks in their

Accepted Answer

A)  Dominant radial symmetry 
B)  Lack of three tissue layers 
C)  Lack of a calcium carbonate skeleton 
D)  All of the above 
A)  Dominant radial symmetry 
B)  Lack of three tissue layers 
C)  Lack of a calcium carbonate skeleton 
D)  All of the above

Question 12

What is the advantage of bilateral symmetry in animals?

Accepted Answer

A)  Can sense food equally in all directions 
B)  Superior in every way to radial symmetry 
C)  Can more efficiently detect signals from one direction while moving 
D)  Is always useful to have a rear end 
A)  Can sense food equally in all directions 
B)  Superior in every way to radial symmetry 
C)  Can more efficiently detect signals from one direction while moving 
D)  Is always useful to have a rear end

Question 13

All Cnidaria

Accepted Answer

A)  Have a swimming life stage known as a medusa 
B)  Are colonial 
C)  Have collar cells 
D)  Have nematocysts 
A)  Have a swimming life stage known as a medusa 
B)  Are colonial 
C)  Have collar cells 
D)  Have nematocysts

Question 14

A close relative of the Pogonophora is

Accepted Answer

A)  Flatworms 
B)  Nemerteans 
C)  Vestimentifera 
D)  Mollusks 
A)  Flatworms 
B)  Nemerteans 
C)  Vestimentifera 
D)  Mollusks

Question 15

Which of the following have a complete gut, including an anus?

Accepted Answer

A)  Sea anemones 
B)  Pogonophora 
C)  Vestimentifera 
D)  Acorn barnacles 
A)  Sea anemones 
B)  Pogonophora 
C)  Vestimentifera 
D)  Acorn barnacles

Question 16

In Cambrian times

Accepted Answer

A)  All of the phyla that lived failed to survive to the present 
B)  No bilateral groups had arisen as yet 
C)  Nearly all of the fossilizable living phyla had appeared by then 
D)  None of the above 
A)  All of the phyla that lived failed to survive to the present 
B)  No bilateral groups had arisen as yet 
C)  Nearly all of the fossilizable living phyla had appeared by then 
D)  None of the above

Question 17

Brachiopods, bryozoans, and phoronids share the following:

Accepted Answer

A)  They are all colonial 
B)  A ctenidium 
C)  A radula 
D)  A lophophore 
A)  They are all colonial 
B)  A ctenidium 
C)  A radula 
D)  A lophophore

Question 18

All sponges have

Accepted Answer

A)  Spicules 
B)  Bilateral symmetry 
C)  Nematocysts 
D)  No chemical defenses 
A)  Spicules 
B)  Bilateral symmetry 
C)  Nematocysts 
D)  No chemical defenses

Question 19

Torsion

Accepted Answer

A)  Is found in mollusks that lack a radula 
B)  Is found in only the scaphopods 
C)  Is an important feature of gastropods 
D)  Refers to the spiral form of the shell 
A)  Is found in mollusks that lack a radula 
B)  Is found in only the scaphopods 
C)  Is an important feature of gastropods 
D)  Refers to the spiral form of the shell

Question 20

Which of the following are not arthropods?

Accepted Answer

A)  Pycnogonids 
B)  Brachiopods 
C)  Barnacles 
D)  Chelicerates 
A)  Pycnogonids 
B)  Brachiopods 
C)  Barnacles 
D)  Chelicerates

Exam 14: The Diversity of Benthic Marine Invertebrates

Bivalve mollusks

Sponges feed by means of

All sponges

Benthic sea squirts are most closely related to

Annelids differ from nematodes in

Members of the Polychaeta

All arthropods share

The radula

Trilobites belong to

Flatworms have

Echinoderms differ from mollusks in their

What is the advantage of bilateral symmetry in animals?

All Cnidaria

A close relative of the Pogonophora is

Which of the following have a complete gut, including an anus?

In Cambrian times

Brachiopods, bryozoans, and phoronids share the following:

All sponges have

Torsion

Which of the following are not arthropods?

Sounding the Deep

The Oceanic Environment

Climate Oscillations and Climate Change

Ecological and Evolutionary Principles of Marine Biology

The Chemical and Physical Environment

Life in a Fluid Medium

Reproduction, Dispersal, and Migration

Plankton

Marine Vertebrates and Other Nekton

The Open Sea: Distributions and Adaptations

Processes in the Water Column

Productivity, Food Webs, and Global Climate Change

Benthic Microorganisms, Seaweeds, and Sea Grasses

Benthic Life Habits

The Tidelands: Rocky Shores, Soft-Substratum Shores, Marshes, Mangroves, Estuaries, and Oyster Reefs

The Shallow Coastal Subtidal: Sea Grass Beds, Rocky Reefs, Kelp Forests, and Coral Reefs

Benthos From the Continental Shelf to the Deep Sea

Polar Marine Biology

Biodiversity and Conservation of the Ocean

Fisheries and Food From the Sea

Environmental Impacts of Industrial Activities and Human Populations

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