INVERTEBRATE REVIEW

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INVERTEBRATE REVIEW
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WORMS
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PORIFERA CNIDARIA
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MOLLUSKS
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ARTHROPODS
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ECHINODERMS
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MISC.
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Arthropods
Arthropods
Arthropods
Arthropods
Worms
Porifera Cnidaria
Mollusks
Echinoderms
Misc.
Worms
Porifera Cnidaria
Mollusks
Worms
Porifera Cnidaria
Mollusks
Worms
Porifera Cnidaria
Echinoderms
Mollusks
Worms
Porifera Cnidaria
Misc.
Echinoderms
Mollusks
Worms
Porifera Cnidaria
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In earthworms, inability to produce offspring
might be associated witha) lack of a true
coelomb) the inability of a worm to fertilize
its own eggsc) a malfunction of the nephridiad)
a malfunction of the clitellum
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d) a malfunction of the clitellum
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Most Flatworms are small and very thin.
Therefore, they can supply their cells with
oxygen and remove metabolic wastes by means
ofa) simple diffusion between body surface and
the environmentb) an open circulatory system
without a heartc) an open circulatory system
with one heartd) a closed circulatory system
with one heart

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a) simple diffusion between body surface and the
environment
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In annelids, nitrogen-containing wastes are
eliminated bya) clitellab) parapodiac)
nephridiad) gills
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c) nephridia
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One way to distinguish a roundworm from an
annelid is toa) count their germ layersb)
examine their body symmetryc) compare the
structure of their body cavitiesd) determine
whether they have cephalization
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a) count their germ layers
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In the tapeworm, both male and female
reproductive organs are contained in each
maturea) scolexb) proglottidc) cystd) egg
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b) proglottid
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How do polyps differ from medusas?a) ployps
have mesoglea, and medusas do notb) medusas are
cylindrical and usually sessile, and polyps are
bell-shaped and motilec) medusas are
carnivorous, and polyps are notd) polyps are
cylindrical and usually sessile, and medusas are
bell-shaped and motile
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d) polyps are cylindrical and usually sessile,
and medusas are bell-shaped and motile
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Which of the following describes the feeding
habits of sponges?A) predatorsB) filter
feedersc) parasitesd) detritovores
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B) filter feeders
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What is the primary body form of Scyphozoans?A)
budb) polypc) medusad) gemmule
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c) medusa
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Many sponges protect themselves from predators by
producinga) larvaeb) choanocytesc)
nematocystsd) toxins
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d) toxins
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The benefit of a sponge producing gemmules is
that gemmulesa) are a form of sexual
reproductionb) allow a sponge to survive long
periods of harsh conditionsc) defend the sponge
against predatorsd) help to filter food for the
sponge
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b) allow a sponge to survive long periods of
harsh conditions
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The tube-like structure through which water
enters and leaves a mollusks body is the a)
sinusb) siphonc) coelomd) mantle cavity
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b) siphon
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The most active mollusks are thea)
gastropodsb) cephalopodsc) bivalvesd)
nudibranchs
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b) cephalopods
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A pond snail is an example of a) gastropodb)
flatwormc) roundwormd) annelid
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a) gastropod
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Daily Double!!
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The spade-shaped burrowing structure of one group
of mollusks and the tentacles of another group
are both modifications of thea) footb)
mantlec) shelld) visceral mass
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a) foot
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Filter-feeding bivlves can be used to monitor the
environmental health of a habitat becausea) the
bivalves reproduce quickly in polluted waterb)
the bivalves concentrate pollutants and
microorganisms in their tissuesc) the bivalves
live near deep-sea ventsd) some bivalves never
get cancer
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b) the bivalves concentrate pollutants and
microorganisms in their tissues
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Which of the following invertebrates is NOT a
crustacean?a) horseshoe crabb) fiddler crabc)
barnacled) crayfish
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a) horseshoe crab
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Arthropods are classified based on the number and
structure of theira) eyes and wingsb) body
segments and appendagesc) muscles and bonesd)
gills and hearts
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b) body segments and appendages
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The appendages of arthropods area) found only
on the headb) hard and immovablec) jointed and
extend from the body walld) divided into six
branches
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c) jointed and extend from the body wall
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What does molting enable an arthropod to do?a)
to breatheb) to reproducec) to growd) to eat
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c) to grow
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Insects are classified asa) crustaceansb)
arachnidsc) uniramiansd) chelicerates
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c) uniramians
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Two echinoderms that are in the same class
area) brittle stars and sea starsb) sea stars
and sea cucmbersc) sea cucumbers and sea
urchinsd) sea urchins and sand dollars
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d) sea urchins and sand dollars
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The plates of the endoskeleton are reduced and
contained inside a soft, muscular body wall
ina) sand dollarsb) sea cucumbersc) sea
urchinsd) brittle stars
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b) sea cucumbers
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The water-vascular system of echinoderms is
involved with each of the following body
functions EXCEPTa) respirationb)
circulationc) movementd) reproduction
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d) reproduction
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The skeleton of an echinoderm is ana)
exoskeleton made of calcium carbonateb)
exoskeleton made of chitinc) endoskeleton made
of calcium carbonated) endoskeleton made of
chitin
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c) endoskeleton made of calcium carbonate
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Daily Double!!
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In echinoderms, body parts usually occur in
multiples of a) twob) sevenc) threed) five
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d) five
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Which are the simplest animals to have body
symmetry?a) spongesb) algaec) cnidariansd)
nematocysts
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c) cnidarians
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Cephaliziation refers to the a) division of the
body into upper and lower sidesb) concentration
of sense organs and nerve cells in the front of
the bodyc) joining together of specialized cells
to form tissuesd) formation of a body cavity
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b) concentration of sense organs and nerve cells
in the front of the body
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In a protostome, the blastopore becomes a(an)a)
mouthb) anusc) zygoted) blastula
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a) mouth
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The blastula is a stage of development of an
embryo that consists ofa) a solid ball of
cellsb) a hollow ball of cellsc) a flat sheet
of cellsd) a folded sheet of cells
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b) a hollow ball of cells
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The upper side of an organism is itsa) dorsal
sideb) ventral sidec) anterior sided)
posterior side
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a) dorsal side
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Double Jeopardy!!
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(No Transcript)
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Worms
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Porifera Cnidaria
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Mollusks
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Arthropods
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Echinoderms
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Misc.
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Arthropods
Misc.
Echinoderms
Mollusks
Worms
Porifera Cnidaria
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A person who has trichinosis likely contracted it
froma) walking barefoot on soil infested with
Trichinella wormsb) eating undercooked meat
containing Trichinella cystsc) mosquitoesd)
coming in contact with Trichinella-infested snails
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b) eating undercooked meat containing Trichinella
cysts
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Which of these animals has a true coelom?a)
filarial wormb) tapewormc) planariand) leech
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d) leech
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A true digestive tract is found ina)
annelidsb) spongesc) cnidariansd) flatworms
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a) annelids
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Free-living flatworms, most of which live in
marine environments or fresh water, area)
flukesb) turbellariansc) tapewormsd) roundworms
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b) turbellarians
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A type of worm that is an external parasite is
thea) tapewormb) polychetec) leechd)
earthworm
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c) leech
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The body symmetry of a cnidarian isa) radial in
the medusa stage and bilateral in the polyp
stageb) radial in both the medusa and polyp
stagesc) bilateral in both the medusa and polyp
stagesd) bilateral in the medusa stage and
radial in the polyp stage
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b) radial in both the medusa and polyp stages
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Which two functions do nematocysts perform?a)
reproduction and defenseb) capturing prey and
locomotionc) defense and capturing preyd)
locomotion and reproduction
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c) defense and capturing prey
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A characteristic of cnidarians is that they are
a) found only in warm, tropical watersb)
carnivorous animalsc) named for their body
symmetryd) all of the above
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b) carnivorous animals
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Flagella are important to the essential functions
within a sponge because flagellaa) protect the
organism from predatorsb) digest food particles
trapped within the organismc) help move water
through the organisms bodyd) produce toxins
that make them poisonous to predators
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c) help move water through the organisms body
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In jellyfishes, the medusa stage reprodusesa)
asexuallyb) sexuallyc) by buddingd) by gemmules
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b) sexually
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The feeding types that occur within the phylum
Mollusca includea) herbivoresb) carnivoresc)
detritivoresd) all of the above
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d) all of the above
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Which pair of terms does NOT include a class of
mollusks and an example of an animal in that
class?a) Cephalopoda/cuttlefishb)
Gastropoda/land slugc) Bivalvia/clamd)
Cephalopoda/nudibranch
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d) Cephalopoda/nudibranch
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The thin layer of tissue that covers a mollusks
body is called the a) mantleb) footc)
visceral massd) shell
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a) mantle
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Mollusks havea) a pseudoceolomb) a true
coelomc) a body cavity between the ectoderm and
mesodermd) no body cavity
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b) a true coelom
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Which characteristic would allow you to
differentiate a nautilus from another type if
mollusk?a) it has a shellb) it has up to 90
tentaclesc) it has a single footd) all of the
above
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b) it has up to 90 tentacles
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Spiders feed bya) swallowing their prey
wholeb) biting off and swallowing pieces of
their preyc) sucking up prey tissues that have
been liquefied by enzymesd) sipping nectar
through a tubelike mouthpart
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c) sucking up prey tissues that have been
liquefied by enzymes
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One difference between a nymph and a larva is
that a nympha) can fly, but a larva cannotb)
is specialized for reproduction, but a larva is
notc) resembles an adult of the same species,
but a larva does notd) molts to become and pupa,
but a larva molts to become an adult
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c) resembles an adult of the same species, but a
larva does not
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An example of a chelicerate is a a) lobsterb)
centipedec) crayfishd) spider
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d) spider
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If an animal has a digestive tract, an open
circulatory system, and an exoskeleton, it could
be a(an)a) arthropodb) echinodermc)
cnidariand) roundworm
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a) arthropod
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In most ant societies, egg-laying is performed
bya) the workersb) one queenc) hundreds of
queensd) reproductive males
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b) one queen
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In most species of echinoderms, respiration
occurs maily in the a) tube feetb)
madreporitec) ring canald) radial canals
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a) tube feet
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Daily Double!!
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Sea lilies and feather starsa) make up the
oldest class of echinodermsb) feed by scraping
algae from rocksc) are the only echinoderms that
live in fresh waterd) are disk-shaped
echinoderms that often burrow into the sand
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a) make up the oldest class of echinoderms
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In an echinoderm, the structure that operates
like a living suction cup is the a)
madreporiteb) tube footc) stomachd) nerve ring
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b) tube foot
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The echinoderms that look like warty, moving
pickles are a) sea urchinsb) sea cucumbersc)
sea starsd) feather stars
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b) sea cucumbers
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Daily Double!!
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Echinoderms are like vertebrtes in that
echinodermsa) are bilaterally symmetrical as
larvae and adultsb) are deuterostomesc) have
cephalizationd) have an anterior end and a
posterior end
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b) are deuterostomes
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Which of the following invertebrates would be
most likely to reproduce by external
fertilization?a) an arachnidb) an insectc) a
land snaild) a cnidarian
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d) a cnidarian
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Gases diffuse most efficiently across a
respiratory membrane if the membrane isa) thick
and dryb) thin and dryc) thick and moistd)
thin and moist
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d) thin and moist
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Which of the following is NOT found in any
radially symmetrical invertebrate?a)
cephalizationb) specialized cellsc) specialized
organsd) a coelom
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a) cephalization
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An animal that has distinct left and right sides
showsa) radial symmetryb) segmentationc)
several planes of symmetryd) bilateral symmetry
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d) bilateral symmetry
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Which structures are NOT part of an excretory
system?a) flame cellsb) spiraclesc)
Malpighian tubulesd) nephridia
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b) spiracles
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Final Jeopardy
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