Deck 34: Coelomate Invertebrates

Question 1

The phylum that includes snails,clams,oysters,and octopuses is the

A)EctoproctA.
B)Brachiopoda.
C)Mollusca.
D)Annelida.
E)Phoronida.

Answer 1

C

Question 2

The organ that is responsible for secreting cocoons in the oligochaetes is known as the

A)nephridiA.
B)setae.
C)radula.
D)clitellum.
E)lophophorE.

Answer 2

D

Question 3

Members of the class ________,octopuses,squids,and nautilus,are highly intelligent.

Answer 3

Cephalopoda

Question 4

In their basic body plan,mollusks have a visceral mass covered with a soft epithelium and a muscular ____ that is used in locomotion.

Question 5

Examples of mollusks that live on land are the

A)earthworms.
B)land crabs.
C)mussels.
D)scorpions.
E)snails and slugs.

Question 6

The molluscan class ________ includes the snails and slugs.

Question 7

Arachnids are generally carnivorous,_____ being the main exception.

Question 8

The mollusks include all of the following except

A)clams.
B)oysters.
C)shrimps.
D)snails.
E)squids.

Question 9

The three phyla,Ectoprocta,Brachiopoda,and Phoronida,have which feature in common?

A)nephridia
B)a lophophore
C)a radula
D)setae
E)a muscular foot

Question 10

The evolution of jointed appendages has made __________ very successful.

Question 11

A _________ is a circular or U-shaped ridge around the mouth,bearing either one or two rows of ciliated,hollow tentacles.

Question 12

Echinoderms show ______ symmetry as adults and have a five-part body plan.

Question 13

Annelids are characterized by serial _________.

Question 14

Many marine mollusks have distinctive larvae which have their bodies encircled by a row of cilia.These larvae are called

A)planulae.
B)polyps.
C)miracidia.
D)zoecia.
E)trochophores.

Question 15

In mollusks,the folds of tissue that arise from the dorsal body wall and enclose a cavity surrounding the visceral mass are called the

A)foot.
B)mantle.
C)nephridia.
D)radula.
E)lophophorE.

Question 16

In many arthropods,body segments have become fused into functional groups called ______.

Question 17

Brachiopods develop as protostomes,but they show ______ cleavage.

Question 18

Ectoprocts are characterized by all of the following except their

A)secretion of a tiny chitinous chamber,the zoecium.
B)chemical communication between individuals through pores between chambers.
C)habitation in fresh and marine water.
D)alternate names Bryozoa and moss animals.
E)use of a pedicle to attach to the substratE.

Question 19

The functions of the lophophore include all of the following except as a

A)surface for gas exchange.
B)food-collecting organ.
C)means of attachment to the substrate.
D)rasping tongue.
E)location for the tentacles and the anus.

Question 20

Mollusks have all of the following except

A)visceral mass covered with a soft epithelium.
B)folds enclosing a cavity between themselves and the visceral mass.
C)gills or lungs within the mantle.
D)individuals secrete a tiny chitinous chamber,zoecium.
E)the shell consists of a horny outer layer,which is rich in protein.

Question 21

Annelids possess all of the following except

A)muscles to swim,crawl,and burrow.
B)ganglia to respond to light and respond to other environmental cues.
C)circulatory,excretory,and neural elements in each segment.
D)setae in each segment.
E)adductor muscles.

Question 22

The medicinal leech,once used to withdraw "unhealthy" blood from patients,produces which of the following to ensure blood flow from the host?

A)antibiotics
B)antibodies
C)anticoagulant
D)blood clots
E)suture material

Question 23

The nitrogenous waste in mollusks is removed by

A)flame cells.
B)nephridia.
C)Malpighian tubules.
D)incurrent siphon.
E)flagella.

Question 24

A biologist has been studying a mollusk that does not have a shell.It lives in the marine environment.Of the examples given below,which one did the biologist study?

A)clam
B)snail
C)garden slug
D)chiton
E)octopus

Question 25

Select the mismatched pair of Phylum Mollusca classes and their examples.

A)Polyplacophora-chitons
B)Gastropoda-slugs
C)Bivalvia-snails
D)Cephalopoda-nautilus
E)Gastropoda-nudibranchs

Question 26

Trochophores,the free-swimming larvae of many mollusks,are propelled through the water by

A)flagellA.
B)cilia.
C)flame cells.
D)nephridia.
E)the radula.

Question 27

The rasping tongue,the radula,is present in which molluscan group?

A)bivalve
B)oyster
C)clam
D)snail
E)scallops

Question 28

The partitions that separate the segments of the annelid body are known as

A)pseudocoels.
B)nephridia.
C)setae.
D)septa.
E)radula.

Question 29

The cephalapod mollusks have

A)a muscular foot.
B)tentacles.
C)two siphons.
D)setae.
E)jointed appendages.

Question 30

You and your biology lab class take a field trip to a marine aquarium.Your guide is a marine biologist who studies squids.She explains to your class how squids are able to blend into their environment.She points out that squids have pouches of pigments embedded in their epithelium.The pouches are called

A)trochophores.
B)spermatophores.
C)lophophores.
D)chromatophores.
E)phytophores.

Question 31

Which of the following organs of cephalopods resemble those of the vertebrates?

A)arms
B)nephridia
C)eyes
D)digestive tissues
E)foot

Question 32

Among mollusks,which of the following are able to change their sex in one single season?

A)sea slugs and oysters
B)squids and octopuses
C)bivalves
D)snails
E)clams

Question 33

Radula modification allowed all of the following functions in gastropods except

A)scraping algae off rocks.
B)eating vegetation.
C)boring holes in other mollusk shells.
D)protecting themselves with nematocysts.
E)injecting poison through a harpoon-like structurE.

Question 34

Which of the following are not found in a bivalve?

A)tentacle,radula,and distinctive head
B)large wedge-shaped foot
C)mantle enveloping the internal organs
D)two large adductor muscles
E)complex gills

Question 35

Squids and octopuses move by means of water movement through their

A)tentacles.
B)cilia and flagella.
C)modified mantle cavity.
D)muscular foot.
E)radula.

Question 36

Each segment of an annelid typically contains bristles of chitin called

A)ciliA.
B)parapodia.
C)chaetae.
D)leglets.
E)setaE.

Question 37

The sexual reproduction of earthworms characteristically is

A)hermaphroditic but cross-fertilizing.
B)hermaphroditic but self-fertilizing.
C)normal type between individuals who remain as males and females throughout their life time.
D)normal appearing,but individuals change sex periodically.
E)normal appearing,but individuals reproduce only once in their lives.

Question 38

Earthworms show all of the following features except

A)containing segments with a mouth on the first and the anus on the last.
B)containing touch-sensitive and light-sensitive organs in the segments.
C)containing fewer setae than in polychaetes.
D)containing distinct head regions and parapodia.
E)being hermaphroditic.

Question 39

A contemporary mollusk in which many of the ancestral characteristics remain is a(n)

A)squid.
B)oyster.
C)chiton.
D)octopus.
E)snail.

Question 40

All of the following are either structures or characteristics of members of the Class Bivalvia of the Phylum Mollusca except

A)the mantle.
B)a radula.
C)a shell.
D)gills.
E)open circulation.

Question 41

Which class of arthropods contains members with two pairs of antennae and legs on their abdomen and thorax?

A)Insecta
B)Arachnida
C)Crustacea
D)Chilopoda
E)Merostomata

Question 42

Oxygen diffuses to the tissues of terrestrial arthropods through the

A)arteries.
B)cells of the cortex.
C)circulatory system.
D)lungs.
E)trachea and tracheoles.

Question 43

Reproduction in the earthworm involves

A)asexual budding.
B)self-fertilization.
C)cross-fertilization between two dioecious organisms.
D)cross-fertilization between two hermaphroditic organisms.
E)recombination between opposite mating types.

Question 44

Eyes with single lenses that respond to light and darkness are found in many arthropods;these are the

A)compound eyes.
B)ocelli.
C)apposition eyes.
D)ommatidia.
E)superposition segments.

Question 45

Air passage into the trachea of most insects is controlled by the closing and opening of valves,which operate special openings called

A)spiracles.
B)ocelli.
C)ommatidia.
D)book lungs.
E)Malpighian tubules.

Question 46

In arthropods,locomotion is accomplished by muscles that work against

A)each other.
B)the exoskeleton.
C)a hydrostatic skeleton.
D)mineralized bones.
E)the pseudocoel.

Question 47

The most successful class of arthropods is

A)InsectA.
B)Arachnida.
C)Crustacea.
D)Chilopoda.
E)Merostomata.

Question 48

In some arthropods tagmatization has produced a combination of head and thorax known as a

A)cephalothorax.
B)fused corpora.
C)headless mite.
D)larval instar.
E)thoracotomy.

Question 49

Chelicerae function as

A)eyes.
B)fangs or pincers.
C)jaws or mandibles.
D)teeth.
E)wings.

Question 50

The class Arachnida includes all of the following except

A)dragon flies.
B)mites.
C)scorpions.
D)spiders.
E)ticks.

Question 51

The passage of an arthropod through stages from egg to adult is

A)differentiation.
B)evolution.
C)graduation.
D)metamorphosis.
E)succession.

Question 52

Compound eyes are composed of independent visual units called

A)apposition segments.
B)ocelli.
C)ommatidia.
D)retinas.
E)simple eyes.

Question 53

Spiders are characterized by all of the following except

A)they are particularly important as predators of insects and other small animals.
B)many use silk webs to catch their prey.
C)many display elaborate courtship behavior.
D)all forms are harmless to humans.
E)they live in diverse habitats on land and some even in water.

Question 54

Nauplius,a unique kind of larva,is characteristic of

A)mites.
B)crustaceans.
C)horseshoe crabs.
D)insects.
E)chelicerates.

Question 55

Spiders and certain other arthropods which lack jaws or mandibles are placed in a subphylum called

A)Agnathae.
B)Amandibulata.
C)blood suckers.
D)chelicerates.
E)mandibulates.

Question 56

A marine biologist visits your biology class and begins his talk entitled,"Life as a Trochophore." A friend seated next to you asks,"What is a trochophore?" You explain that a trochophore is

A)another name for the veliger stage in earthworm reproduction.
B)a term used to describe a larval form of either the phylum Mollusca or Annelida.
C)another name for the veliger stage in the oyster.
D)similar to a lophophore,but only found in the phylum Annelida.
E)a parasite in the intestines of a bivalve mollusk.

Question 57

The evolutionary innovation that first appeared in arthropods and is characteristic of the most successful of all animal groups is that of

A)bilateral symmetry.
B)coelomic body architecture.
C)jointed appendages.
D)segmentation.
E)three primary types of tissues.

Question 58

The excretory structures of terrestrial arthropods are slender projections from the digestive tract that are attached at the junction of the midgut and hindgut.These are called

A)flame cells.
B)kidneys and bladders.
C)Malpighian tubules.
D)nephridia.
E)ocelli.

Question 59

A marine biologist is conducting research on animals that have a lophophore and two calcified shells.Based on this information,this animal this must belong to the phylum

A)MolluscA.
B)Phoronida.
C)Ectoprocta.
D)Bryopoda.
E)Brachiopoda.

Question 60

The rigid chitinous exoskeleton of an arthropod has all of the following functions except it

A)provides a place for muscle attachment.
B)protects the animal from predators.
C)impedes water loss.
D)maintains a uniform size for all individuals of that species.
E)prevents injury to the animal.

Question 61

An entomologist has been conducting research on the Malpighian tubules of hornets.He is interested in their function.Which of the following statements about Malpighian tubules is not correct?

A)Malpighian tubules empty waste into the hindgut.
B)Malpighian tubules are slender projections from the digestive system.
C)Malpighian tubules collect and filter body fluids of some arthropods.
D)Malpighian tubules are a part of the tracheal system used by some arthropods for respiration.
E)Malpighian tubules allow for reabsorption of needed salts and water.

Question 62

Sea stars are among the most important invertebrate

A)predators in the marine ecosystems.
B)producers in the marine ecosystems.
C)reproducers in the marine ecosystems.
D)recyclers in the marine ecosystem.
E)protostomes in the marine ecosystem.

Question 63

In a recent morphological study of arthropod phylogeny,it was reported that insects are more closely related to

A)crustaceans.
B)millipedes.
C)centipedes.
D)horseshoe crabs.
E)spiders.

Question 64

Insect sensing of the environment is through all of the following except

A)sensory hairs to detect touch.
B)tympanal organs to detect sound.
C)chemoreceptors to detect pheromones.
D)organs of smell in the antennae.
E)camera-type eyes.

Question 65

If you examine a spider and an ant,you notice quickly that they are arthropods but they have different characteristics.Select the incorrect choice of characteristics.

A)Spiders have a cephalothorax and abdomen;insects have a head,a thorax,and an abdomen.
B)Spiders and insects have a tracheal respiration system.
C)Spiders are strictly carnivorous;insects can be carnivorous or herbivorous depending on the species.
D)Spiders and insects have open circulatory systems.
E)Spiders do not have wings;many insects do have wings.

Question 66

Reproductive modes of echinoderms include all of the following except

A)breaking into parts and regenerating new animals from them.
B)breaking into equal parts which become two whole animals.
C)developing from trochophore larvae.
D)external sexual reproduction produces fertilized eggs.
E)fertilized eggs develop into free-swimming,bilaterally symmetrical larvaE.

Question 67

Decapod crustaceans (shrimps,lobsters,and crabs)are characterized by all of the following except

A)a carapace,a dorsal cephalothorax shield.
B)a ventral line of appendages,swimmerets.
C)flattened uropods form a paddle at the end of the abdomen.
D)a tail spine,telson.
E)cheliceraE.

Question 68

A marine biologist makes a presentation about crustaceans to your biology class.He explains that he has recently received an NSF grant to study sessile crustaceans.You are only aware of one group of sessile crustaceans.This crustacean must be

A)a lobster.
B)a crayfish.
C)a shrimp.
D)a barnacle.
E)the nauplius.

Question 69

Which of the following are dwellers of deep ocean floor and shallow waters,where they pull themselves along two arms at a time,like oars rowing a boat?

A)sea lilies
B)brittle stars
C)sea stars
D)sea urchins
E)sand dollars

Question 70

A marine biologist's research involves the water vascular system of a species of sea star.Which of the following terms would not be used in a description of the water vascular system?

A)madreporite
B)ring canal
C)ampulla
D)tube foot
E)pedicellariae

Question 71

All of the following are examples of echinoderms except

A)sea cucumbers.
B)brittle stars.
C)sand dollars.
D)sea squirts.
E)sea daisies.

Question 72

Insects are characterized by all of the following except

A)Malpighian tubules and tracheA.
B)a nymph developmental stage.
C)three body sections-head,thorax,and abdomen.
D)three pairs of legs attached to the thorax,and one pair of antennae.
E)one or two pairs of wings.

Question 73

These echinoderms have soft,slug-like bodies with tough,leathery skin.They are the

A)sea pansies.
B)sea lilies.
C)sea daisies.
D)sea cucumbers.
E)sea anemones.

Question 74

All of the following are true about sea stars except

A)they are the most familiar echinoderms.
B)they are the most important predators in many marine ecosystems.
C)they have a pigmented epidermis.
D)they are the only echinoderms that are fully sessile.
E)they are abundant in the intertidal zonE.

Question 75

A sieve-like plate on the echinoderms surface through which water enters the vascular system and flows to the ring canal through a tube is called

A)madreporite.
B)ampulla.
C)nerve ring.
D)skin gills.
E)endoskeleton.

Question 76

In many echinoderms respiration and waste removal take place by means of finger-like projections that occur near the spines,which are called

A)madreporite.
B)ampulla.
C)nerve ring.
D)papulae.
E)endoskeleton.

Question 77

All of the following are characteristics of spiders except

A)antennae (1 pair).
B)walking legs (4 pair).
C)chelicerae (1 pair).
D)pedipalps (1 pair).
E)cephalothorax and abdomen.

Question 78

Which of the following is not true about crustaceans?

A)They produce larvae known as nauplius.
B)They have legs on their abdomen and thorax.
C)They have two pairs of antennae.
D)Many have compound eyes.
E)They have covers called the opercula,posterior to the legs.

Question 79

An invertebrate biologist is conducting research with crabs.Her interest is ecdysis.This implies that she studies

A)tagmatization processes in crustaceans.
B)how ommatidia function individually in a compound eye.
C)how the HOX gene controls the fusion of the head and thorax into the cephalothorax.
D)how ocelli evolved from mere photoreceptors to imaging lens.
E)the molting process.

Question 80

Most of the familiar animals seen along the seashore are echinoderms,which include all of the following except

A)barnacles.
B)brittle stars.
C)sand dollars.
D)sea cucumbers.
E)sea urchins.