INVERTEBRATE REVIEW

INVERTEBRATE REVIEW

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WORMSWORMS

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PORIFERA & PORIFERA & CNIDARIACNIDARIA

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MOLLUSKSMOLLUSKS

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ARTHROPODARTHROPODSS

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ECHINODERMECHINODERMSS

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MISC.MISC.

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Worms Porifera & Cnidaria

Mollusks Arthropods Echinoderms Misc.Worms Porifera & Cnidaria

MollusksWorms Porifera & Cnidaria

ArthropodsMollusksWorms Porifera & Cnidaria

EchinodermsArthropodsMollusksWorms Porifera & Cnidaria

Misc.EchinodermsArthropodsMollusksWorms Porifera & Cnidaria

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In earthworms, inability to In earthworms, inability to produce offspring might be produce offspring might be

associated with:associated with:

a) lack of a true coeloma) lack of a true coelomb) the inability of a worm to b) the inability of a worm to

fertilize its own eggsfertilize its own eggsc) a malfunction of the c) a malfunction of the

nephridianephridiad) a malfunction of the d) a malfunction of the

clitellumclitellum

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d) a malfunction of the clitellumd) a malfunction of the clitellum

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Most Flatworms are small and very Most Flatworms are small and very thin. Therefore, they can supply thin. Therefore, they can supply

their cells with oxygen and remove their cells with oxygen and remove metabolic wastes by means of:metabolic wastes by means of:

a) simple diffusion between body a) simple diffusion between body surface and the environmentsurface and the environmentb) an open circulatory system b) an open circulatory system

without a heartwithout a heartc) an open circulatory system with c) an open circulatory system with

one heartone heartd) a closed circulatory system with d) a closed circulatory system with

one heartone heart

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a) simple diffusion between body a) simple diffusion between body surface and the environmentsurface and the environment

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In annelids, nitrogen-In annelids, nitrogen-containing wastes are containing wastes are

eliminated by:eliminated by:

a) clitellaa) clitellab) parapodiab) parapodiac) nephridiac) nephridia

d) gillsd) gills

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c) nephridiac) nephridia

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One way to distinguish a One way to distinguish a roundworm from an annelid roundworm from an annelid

is to:is to:

a) count their germ layersa) count their germ layersb) examine their body b) examine their body

symmetrysymmetryc) compare the structure of c) compare the structure of

their body cavitiestheir body cavitiesd) determine whether they d) determine whether they

have cephalizationhave cephalization

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a) count their germ layersa) count their germ layers

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In the tapeworm, both In the tapeworm, both male and female male and female

reproductive organs reproductive organs are contained in each are contained in each

mature:mature:

a) scolexa) scolexb) proglottidb) proglottid

c) cystc) cystd) eggd) egg

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b) proglottidb) proglottid

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How do polyps differ from How do polyps differ from medusas?medusas?

a) ployps have mesoglea, and a) ployps have mesoglea, and medusas do notmedusas do not

b) medusas are cylindrical and b) medusas are cylindrical and usually sessile, and polyps are bell-usually sessile, and polyps are bell-

shaped and motileshaped and motilec) medusas are carnivorous, and c) medusas are carnivorous, and

polyps are notpolyps are notd) polyps are cylindrical and d) polyps are cylindrical and

usually sessile, and medusas are usually sessile, and medusas are bell-shaped and motilebell-shaped and motile

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d) polyps are cylindrical and d) polyps are cylindrical and usually sessile, and medusas are usually sessile, and medusas are

bell-shaped and motilebell-shaped and motile

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Which of the Which of the following describes following describes

the feeding habits of the feeding habits of sponges?sponges?

A) predatorsA) predatorsB) filter feedersB) filter feeders

c) parasitesc) parasitesd) detritovoresd) detritovores

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B) filter B) filter feedersfeeders

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What is the primary What is the primary body form of body form of Scyphozoans?Scyphozoans?

A) budA) budb) polypb) polyp

c) medusac) medusad) gemmuled) gemmule

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c) medusac) medusa

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Many sponges protect Many sponges protect themselves from themselves from

predators by producingpredators by producing

a) larvaea) larvaeb) choanocytesb) choanocytesc) nematocystsc) nematocysts

d) toxinsd) toxins

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d) toxinsd) toxins

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The benefit of a sponge The benefit of a sponge producing gemmules is that producing gemmules is that

gemmulesgemmules

a) are a form of sexual a) are a form of sexual reproductionreproduction

b) allow a sponge to survive b) allow a sponge to survive long periods of harsh long periods of harsh

conditionsconditionsc) defend the sponge against c) defend the sponge against

predatorspredatorsd) help to filter food for the d) help to filter food for the

spongesponge

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b) allow a sponge to survive b) allow a sponge to survive long periods of harsh long periods of harsh

conditionsconditions

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The tube-like structure The tube-like structure through which water through which water enters and leaves a enters and leaves a

mollusk’s body is the mollusk’s body is the

a) sinusa) sinusb) siphonb) siphonc) coelomc) coelom

d) mantle cavityd) mantle cavity

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b) siphonb) siphon

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The most active The most active mollusks are themollusks are the

a) gastropodsa) gastropodsb) cephalopodsb) cephalopods

c) bivalvesc) bivalvesd) nudibranchsd) nudibranchs

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b) cephalopodsb) cephalopods

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A pond snail is an A pond snail is an example of example of

a) gastropoda) gastropodb) flatwormb) flatworm

c) roundwormc) roundwormd) annelidd) annelid

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a) gastropoda) gastropod

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The spade-shaped burrowing The spade-shaped burrowing structure of one group of structure of one group of

mollusks and the tentacles mollusks and the tentacles of another group are both of another group are both

modifications of themodifications of the

a) foota) footb) mantleb) mantlec) shellc) shell

d) visceral massd) visceral mass

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a) foota) foot

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Filter-feeding bivlves can be Filter-feeding bivlves can be used to monitor the used to monitor the

environmental health of a environmental health of a habitat becausehabitat because

a) the bivalves reproduce a) the bivalves reproduce quickly in polluted waterquickly in polluted water

b) the bivalves concentrate b) the bivalves concentrate pollutants and microorganisms pollutants and microorganisms

in their tissuesin their tissuesc) the bivalves live near deep-c) the bivalves live near deep-

sea ventssea ventsd) some bivalves never get d) some bivalves never get

cancercancer

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b) the bivalves concentrate b) the bivalves concentrate pollutants and pollutants and

microorganisms in their microorganisms in their tissuestissues

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Which of the following Which of the following invertebrates is NOT a invertebrates is NOT a

crustacean?crustacean?

a) horseshoe craba) horseshoe crabb) fiddler crabb) fiddler crab

c) barnaclec) barnacled) crayfishd) crayfish

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a) horseshoe craba) horseshoe crab

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Arthropods are classified Arthropods are classified based on the number and based on the number and

structure of theirstructure of their

a) eyes and wingsa) eyes and wingsb) body segments and b) body segments and

appendagesappendagesc) muscles and bonesc) muscles and bones

d) gills and heartsd) gills and hearts

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b) body segments and b) body segments and appendagesappendages

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The appendages of The appendages of arthropods arearthropods are

a) found only on the heada) found only on the headb) hard and immovableb) hard and immovablec) jointed and extend c) jointed and extend

from the body wallfrom the body walld) divided into six d) divided into six

branchesbranches

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c) jointed and extend c) jointed and extend from the body wallfrom the body wall

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What does molting What does molting enable an arthropod to enable an arthropod to

do?do?

a) to breathea) to breatheb) to reproduceb) to reproduce

c) to growc) to growd) to eatd) to eat

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c) to growc) to grow

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Insects are Insects are classified asclassified as

a) crustaceansa) crustaceansb) arachnidsb) arachnidsc) uniramiansc) uniramiansd) cheliceratesd) chelicerates

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c) uniramiansc) uniramians

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Two echinoderms that are Two echinoderms that are in the same class arein the same class are

a) brittle stars and sea a) brittle stars and sea starsstars

b) sea stars and sea b) sea stars and sea cucmberscucmbers

c) sea cucumbers and sea c) sea cucumbers and sea urchinsurchins

d) sea urchins and sand d) sea urchins and sand dollarsdollars

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d) sea urchins and sand d) sea urchins and sand dollarsdollars

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The plates of the The plates of the endoskeleton are reduced endoskeleton are reduced

and contained inside a and contained inside a soft, muscular body wall soft, muscular body wall

inin

a) sand dollarsa) sand dollarsb) sea cucumbersb) sea cucumbers

c) sea urchinsc) sea urchinsd) brittle starsd) brittle stars

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b) sea cucumbersb) sea cucumbers

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The water-vascular The water-vascular system of echinoderms is system of echinoderms is involved with each of the involved with each of the following body functions following body functions

EXCEPTEXCEPT

a) respirationa) respirationb) circulationb) circulationc) movementc) movement

d) reproductiond) reproduction

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d) reproductiond) reproduction

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The skeleton of an The skeleton of an echinoderm is anechinoderm is an

a) exoskeleton made of a) exoskeleton made of calcium carbonatecalcium carbonate

b) exoskeleton made of b) exoskeleton made of chitinchitin

c) endoskeleton made of c) endoskeleton made of calcium carbonatecalcium carbonate

d) endoskeleton made of d) endoskeleton made of chitinchitin

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c) endoskeleton made of c) endoskeleton made of calcium carbonatecalcium carbonate

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In echinoderms, body In echinoderms, body parts usually occur in parts usually occur in

multiples of multiples of

a) twoa) twob) sevenb) sevenc) threec) threed) fived) five

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d) fived) five

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Which are the simplest Which are the simplest animals to have body animals to have body

symmetry?symmetry?

a) spongesa) spongesb) algaeb) algae

c) cnidariansc) cnidariansd) nematocystsd) nematocysts

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c) cnidariansc) cnidarians

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Cephaliziation refers to the Cephaliziation refers to the

a) division of the body into a) division of the body into upper and lower sidesupper and lower sides

b) concentration of sense b) concentration of sense organs and nerve cells in the organs and nerve cells in the

front of the bodyfront of the bodyc) joining together of c) joining together of

specialized cells to form specialized cells to form tissuestissues

d) formation of a body cavityd) formation of a body cavity

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b) concentration of sense b) concentration of sense organs and nerve cells in the organs and nerve cells in the

front of the bodyfront of the body

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In a protostome, the In a protostome, the blastopore becomes blastopore becomes

a(an)a(an)

a) moutha) mouthb) anusb) anus

c) zygotec) zygoted) blastulad) blastula

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a) moutha) mouth

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The blastula is a stage of The blastula is a stage of development of an embryo development of an embryo

that consists ofthat consists of

a) a solid ball of cellsa) a solid ball of cellsb) a hollow ball of cellsb) a hollow ball of cellsc) a flat sheet of cellsc) a flat sheet of cells

d) a folded sheet of cellsd) a folded sheet of cells

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b) a hollow ball of cellsb) a hollow ball of cells

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The upper side of The upper side of an organism is itsan organism is its

a) dorsal sidea) dorsal sideb) ventral sideb) ventral sidec) anterior sidec) anterior side

d) posterior sided) posterior side

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a) dorsal sidea) dorsal side

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WormsWorms

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Porifera & Porifera & CnidariaCnidaria

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MollusksMollusks

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ArthropodsArthropods

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EchinodermsEchinoderms

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Misc.Misc.

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Misc.EchinodermsArthropodsMollusksWorms Porifera & Cnidaria

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A person who has A person who has trichinosis likely contracted trichinosis likely contracted

it fromit from

a) walking barefoot on soil a) walking barefoot on soil infested with infested with TrichinellaTrichinella

wormswormsb) eating undercooked b) eating undercooked

meat containing meat containing TrichinellaTrichinella cystscysts

c) mosquitoesc) mosquitoesd) coming in contact with d) coming in contact with TrichinellaTrichinella-infested snails-infested snails

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b) eating undercooked meat b) eating undercooked meat containing containing TrichinellaTrichinella cysts cysts

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Which of these Which of these animals has a true animals has a true

coelom?coelom?

a) filarial worma) filarial wormb) tapewormb) tapewormc) planarianc) planarian

d) leechd) leech

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d) leechd) leech

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A true digestive A true digestive tract is found intract is found in

a) annelidsa) annelidsb) spongesb) sponges

c) cnidariansc) cnidariansd) flatwormsd) flatworms

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a) annelidsa) annelids

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Free-living flatworms, Free-living flatworms, most of which live in most of which live in

marine environments or marine environments or fresh water, arefresh water, are

a) flukesa) flukesb) turbellariansb) turbellariansc) tapewormsc) tapeworms

d) roundwormsd) roundworms

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b) turbellariansb) turbellarians

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A type of worm that is A type of worm that is an external parasite is an external parasite is

thethe

a) tapeworma) tapewormb) polycheteb) polychete

c) leechc) leechd) earthwormd) earthworm

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c) leechc) leech

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The body symmetry of a cnidarian The body symmetry of a cnidarian isis

a) radial in the medusa stage and a) radial in the medusa stage and bilateral in the polyp stagebilateral in the polyp stage

b) radial in both the medusa and b) radial in both the medusa and polyp stagespolyp stages

c) bilateral in both the medusa c) bilateral in both the medusa and polyp stagesand polyp stages

d) bilateral in the medusa stage d) bilateral in the medusa stage and radial in the polyp stageand radial in the polyp stage

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b) radial in both the medusa b) radial in both the medusa and polyp stagesand polyp stages

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Which two functions do Which two functions do nematocysts perform?nematocysts perform?

a) reproduction and a) reproduction and defensedefense

b) capturing prey and b) capturing prey and locomotionlocomotion

c) defense and capturing c) defense and capturing preyprey

d) locomotion and d) locomotion and reproductionreproduction

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c) defense and capturing c) defense and capturing preyprey

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A characteristic of A characteristic of cnidarians is that they are cnidarians is that they are

a) found only in warm, a) found only in warm, tropical waterstropical waters

b) carnivorous animalsb) carnivorous animalsc) named for their body c) named for their body

symmetrysymmetryd) all of the aboved) all of the above

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b) carnivorous animalsb) carnivorous animals

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Flagella are important to the Flagella are important to the essential functions within a essential functions within a

sponge because flagellasponge because flagella

a) protect the organism from a) protect the organism from predatorspredators

b) digest food particles trapped b) digest food particles trapped within the organismwithin the organism

c) help move water through the c) help move water through the organism’s bodyorganism’s body

d) produce toxins that make them d) produce toxins that make them poisonous to predatorspoisonous to predators

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c) help move water through c) help move water through the organism’s bodythe organism’s body

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In jellyfishes, the In jellyfishes, the medusa stage medusa stage

reprodusesreproduses

a) asexuallya) asexuallyb) sexuallyb) sexually

c) by buddingc) by buddingd) by gemmulesd) by gemmules

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b) sexuallyb) sexually

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The feeding types that The feeding types that occur within the occur within the phylum Mollusca phylum Mollusca

includeinclude

a) herbivoresa) herbivoresb) carnivoresb) carnivoresc) detritivoresc) detritivores

d) all of the aboved) all of the above

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d) all of the aboved) all of the above

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Which pair of terms does Which pair of terms does NOT include a class of NOT include a class of

mollusks and an example mollusks and an example of an animal in that class?of an animal in that class?

a) Cephalopoda/cuttlefisha) Cephalopoda/cuttlefishb) Gastropoda/land slugb) Gastropoda/land slug

c) Bivalvia/clamc) Bivalvia/clamd) d)

Cephalopoda/nudibranchCephalopoda/nudibranch

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d) d) Cephalopoda/nudibrancCephalopoda/nudibranc

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The thin layer of tissue The thin layer of tissue that covers a mollusk’s that covers a mollusk’s

body is called the body is called the

a) mantlea) mantleb) footb) foot

c) visceral massc) visceral massd) shelld) shell

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a) mantlea) mantle

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Mollusks haveMollusks have

a) a pseudoceoloma) a pseudoceolomb) a true coelomb) a true coelomc) a body cavity c) a body cavity

between the ectoderm between the ectoderm and mesodermand mesoderm

d) no body cavityd) no body cavity

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b) a true coelomb) a true coelom

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Which characteristic would Which characteristic would allow you to differentiate a allow you to differentiate a

nautilus from another type if nautilus from another type if mollusk?mollusk?

a) it has a shella) it has a shellb) it has up to 90 tentaclesb) it has up to 90 tentacles

c) it has a single footc) it has a single footd) all of the aboved) all of the above

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b) it has up to 90 b) it has up to 90 tentaclestentacles

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Spiders feed bySpiders feed by

a) swallowing their prey a) swallowing their prey wholewhole

b) biting off and swallowing b) biting off and swallowing pieces of their preypieces of their prey

c) sucking up prey tissues c) sucking up prey tissues that have been liquefied by that have been liquefied by

enzymesenzymesd) sipping nectar through a d) sipping nectar through a

tubelike mouthparttubelike mouthpart

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c) sucking up prey tissues c) sucking up prey tissues that have been liquefied that have been liquefied

by enzymesby enzymes

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One difference between a One difference between a nymph and a larva is that a nymph and a larva is that a

nymphnymph

a) can fly, but a larva cannota) can fly, but a larva cannotb) is specialized for b) is specialized for

reproduction, but a larva is notreproduction, but a larva is notc) resembles an adult of the c) resembles an adult of the

same species, but a larva does same species, but a larva does notnot

d) molts to become and pupa, d) molts to become and pupa, but a larva molts to become an but a larva molts to become an

adultadult

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c) resembles an adult of the c) resembles an adult of the same species, but a larva same species, but a larva

does notdoes not

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An example of a An example of a chelicerate is a chelicerate is a

a) lobstera) lobsterb) centipedeb) centipedec) crayfishc) crayfishd) spiderd) spider

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d) spiderd) spider

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If an animal has a digestive If an animal has a digestive tract, an open circulatory tract, an open circulatory

system, and an exoskeleton, system, and an exoskeleton, it could be a(an)it could be a(an)

a) arthropoda) arthropodb) echinodermb) echinoderm

c) cnidarianc) cnidariand) roundwormd) roundworm

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a) arthropoda) arthropod

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In most ant societies, In most ant societies, egg-laying is performed egg-laying is performed

byby

a) the workersa) the workersb) one queenb) one queen

c) hundreds of queensc) hundreds of queensd) reproductive malesd) reproductive males

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b) one queenb) one queen

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In most species of In most species of echinoderms, echinoderms,

respiration occurs respiration occurs maily in the maily in the

a) tube feeta) tube feetb) madreporiteb) madreporite

c) ring canalc) ring canald) radial canalsd) radial canals

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a) tube feeta) tube feet

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Sea lilies and feather starsSea lilies and feather stars

a) make up the oldest class of a) make up the oldest class of echinodermsechinoderms

b) feed by scraping algae from b) feed by scraping algae from rocksrocks

c) are the only echinoderms that c) are the only echinoderms that live in fresh waterlive in fresh water

d) are disk-shaped echinoderms d) are disk-shaped echinoderms that often burrow into the sandthat often burrow into the sand

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a) make up the oldest class a) make up the oldest class of echinodermsof echinoderms

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In an echinoderm, the In an echinoderm, the structure that operates structure that operates

like a living suction cup is like a living suction cup is the the

a) madreporitea) madreporiteb) tube footb) tube footc) stomachc) stomach

d) nerve ringd) nerve ring

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b) tube footb) tube foot

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The echinoderms that The echinoderms that look like warty, moving look like warty, moving

pickles are pickles are

a) sea urchinsa) sea urchinsb) sea cucumbersb) sea cucumbers

c) sea starsc) sea starsd) feather starsd) feather stars

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b) sea cucumbersb) sea cucumbers

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Echinoderms are like Echinoderms are like vertebrtes in that vertebrtes in that

echinodermsechinoderms

a) are bilaterally a) are bilaterally symmetrical as larvae and symmetrical as larvae and

adultsadultsb) are deuterostomesb) are deuterostomesc) have cephalizationc) have cephalization

d) have an anterior end and d) have an anterior end and a posterior enda posterior end

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b) are deuterostomesb) are deuterostomes

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Which of the following Which of the following invertebrates would be invertebrates would be most likely to reproduce most likely to reproduce by external fertilization?by external fertilization?

a) an arachnida) an arachnidb) an insectb) an insect

c) a land snailc) a land snaild) a cnidariand) a cnidarian

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d) a cnidariand) a cnidarian

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Gases diffuse most Gases diffuse most efficiently across a efficiently across a

respiratory membrane if respiratory membrane if the membrane isthe membrane is

a) thick and drya) thick and dryb) thin and dryb) thin and dry

c) thick and moistc) thick and moistd) thin and moistd) thin and moist

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d) thin and moistd) thin and moist

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Which of the following Which of the following is NOT found in any is NOT found in any radially symmetrical radially symmetrical

invertebrate?invertebrate?

a) cephalizationa) cephalizationb) specialized cellsb) specialized cells

c) specialized organsc) specialized organsd) a coelomd) a coelom

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a) cephalizationa) cephalization

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An animal that has An animal that has distinct left and right distinct left and right

sides showssides shows

a) radial symmetrya) radial symmetryb) segmentationb) segmentation

c) several planes of c) several planes of symmetrysymmetry

d) bilateral symmetryd) bilateral symmetry

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d) bilateral symmetryd) bilateral symmetry

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Which structures are Which structures are NOT part of an NOT part of an

excretory system?excretory system?

a) flame cellsa) flame cellsb) spiraclesb) spiracles

c) Malpighian tubulesc) Malpighian tubulesd) nephridiad) nephridia

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b) spiraclesb) spiracles

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Name the live invertebrates in my

classroom and classify them.

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Hermit crabs – (P)Arthropoda – (SF)Crustacea – (C)Malacostraca – (O)Decapoda – (SO)Pleocyemata – (IO)Anomura – (S)Paguroidea

Pill bugs – (P)Arthropoda – (SF)Crustacea – (C)Malacostraca – (O)Isopoda – (SO)Onicidea – (F)Armadillidiidae

Sow bugs – (P)Arthropoda – (SF)Crustacea – (C)Malacostraca – (O)Isopoda – (SO)Onicidea – (IO)Diplocheta

Centipede- (P)Arthropoda – (SF)Myriapoda – (C)Chilopoda