Deck 33: The Invertebrates

Question 1

An animal that is attached to the substrate and cannot move from one place to another is said to be:

A) rooted
B) sessile
C) sedentious
D) fixated
E) commatose

Answer 1

sessile

Question 2

Animals that lack a vertebral column are known as:

A) inarticulates
B) invertebrates
C) supinates
D) retrogrades
E) aspinates

Answer 2

invertebrates

Question 3

Which of the following statements correctly traces the route of water through a sponge?

A) enters through the osculum into the spongocoel and exits via the ostia
B) enters through the spongocoel into the osculum and exits via the ostia
C) enters through the ostia into the osculum and exits via the spongocoel
D) enters through the ostia into the spongocoel and exits via the osculum
E) enters through the osculum into the ostia and exits via the spongocoel

Answer 3

enters through the ostia into the spongocoel and exits via the osculum

Question 4

An individual animal that can produce both sperm and eggs is known as:

A) a gametophyte
B) an hermaphrodite
C) a morphodyte
D) a bisexual
E) a transexual

Question 5

The Porifera and Cnidaria have superficially similar body plans. Indicate which of the following does NOT describe equivalent features in the two groups.

A) spongocoel and gastrovascular cavity
B) mesohyl and mesoglea
C) osculum and mouth/anus
D) epithelial cells and epidermis
E) spongin and polyp

Question 6

Which of the following statements best describes characteristics of Platyhelminthes?

A) They are acoelomate.
B) They are triploblastic.
C) They have an incomplete digestive system.
D) They respire by diffusion of gases through the body wall.
E) All the choices provided are true.

Question 7

The basic excretory unit in the protonephridia of flatworms is a:

A) scolex
B) flame cell
C) cnidocil
D) ganglion
E) cercaria

Question 8

Which of the following groups or animals is NOT a member of the Platyhelminthes?

A) planarian
B) monogenean
C) tapeworm
D) trematode
E) ctenophore

Question 9

The life cycle of the Chinese liver fluke goes through which of the following sequences in its life history?

A) adult, shelled embryo, miracidium, cercaria, sporocyst, rediae, metacercaria, adult
B) adult, shelled embryo, miracidium, sporocyst, rediae, cercaria, metacercaria, adult
C) adult, shelled embryo, miracidium, metacercaria, sporocyst, rediae, cercaria, adult
D) adult, miracidium, sporocyst, rediae, cercaria, metacercaria, shelled embryo, adult
E) adult, shelled embryo, sporocyst, rediae, cercaria, metacercaria, miracidium, adult

Question 10

Parthenogenesis is:

A) reproduction by way of diploid females laying diploid eggs that hatch into diploid females
B) asexual reproduction by way of budding of a new individual from the parent
C) reproduction by way of diploid females laying haploid eggs that require fertilization by sperm
D) reproduction by way of haploid females laying haploid eggs that hatch into haploid females
E) reproduction by way of diploid females laying haploid eggs that hatch into haploid males who in turn produce sperm that fertilizes other haploid eggs

Question 11

Which of the following statements is NOT true of lophophorates?

A) Their tentacles serve both in respiration and in feeding.
B) They have a U-shaped digestive tract.
C) They have a true coelom.
D) There are three phyla of them: Phoronida, Bryozoa, Brachiopoda.
E) They are parthenogenetic.

Question 12

Which of the following is NOT a mollusk?

A) a chiton
B) a nautilus
C) a nudibranch
D) an oyster
E) a brachiopod

Question 13

Which of the following statements is NOT true of cephalopods?

A) Some are very large and can weigh as much as two tons.
B) Some are very intelligent and are good learners.
C) Some have shells and some do not.
D) They are predatory.
E) They have an open circulatory system.

Question 14

The phylum Annelida contains:

A) freshwater oligochaete worms
B) marine polychaete worms
C) earthworms
D) leeches
E) all of the choices provided

Question 15

Which of the following structures DOES NOT occur in a series of successive segments of an earthworm?

A) crop
B) nerve cord
C) setae
D) circular muscles
E) metanephridia

Question 16

The polychaetes differ from other classes of annelids by possessing:

A) setae
B) giant axons
C) parapoida
D) body segments
E) none of the choices provided

Question 17

Hirudinea is the only class of annelids that contains:

A) species that are parasitic blood suckers
B) species with a segmented body
C) parapodia
D) a gizzard
E) a clitellum

Question 18

Nematodes are unusual among worms of other major phyla by:

A) having longitudinal muscles but no circular muscles
B) having separate male and female individuals
C) by shedding their integument
D) by having a tough cuticle made largely of collagen
E) All of the choices provided are correct

Question 19

Respiration in adult terrestrial insects is achieved by way of:

A) gills
B) tracheae
C) book lungs
D) passage of respiratory gases through the cuticle
E) Malphigian tubules

Question 20

The defining characteristics of the phylum Arthropoda are:

A) jointed legs, ecdysis, and an exoskeleton
B) antennae, six legs, and mandibles
C) compound eyes, book lungs, and the hemocoel
D) Malphigian tubules, ommatidia, and tagmata
E) spiracles, cephalothorax, and proboscis

Question 21

Which of the following kinds of animals are NOT arthropods?

A) crabs
B) trilobites
C) centipedes
D) mites
E) nautilus

Question 22

Which of the following structures is NOT possessed by spiders?

A) cephalothorax
B) pedicel
C) pedipalps
D) spinnerets
E) antennae

Question 23

Which of the following couplets DOES NOT give the correct kinds of insects contained in the Order?

A) Coleoptera: beetles
B) Lepidoptera: grasshoppers
C) Diptera: flies
D) Hemiptera: bugs
E) Hymenoptera: ants, bees, and wasps

Question 24

Which of the following kinds of animals are NOT crustaceans?

A) krill
B) barnacles
C) ostracods
D) pill bugs
E) scorpions

Question 25

Which of the following is NOT an immature stage of an animal?

A) nauplius
B) trochophore
C) caterpillar
D) nymph
E) swimmeret

Question 26

Which of the following statements best describes features that are characteristic of crustaceans?

A) two pairs of antennae
B) antennal glands and maxillary glands
C) calcium carbonate deposited in the exoskeleton
D) internal fertilization
E) all of the choices provided

Question 27

Which of the following is not a defining trait of the phylum Chordata?

A) notochord
B) dorsal hollow nerve cord
C) pharyngeal slits
D) post anal tail
E) protostome development

Question 28

In humans the pharyngeal slits mostly disappear during development, except for one pair that in the adults forms:

A) a cleft palate
B) the Eustachian tubes
C) the thyroid gland
D) the glottis
E) the opening to the voice box

Question 29

Garstang's theory states that the vertebrates originated from:

A) larval tunicates that developed the ability to reproduce sexually while retaining the larval body form
B) a gradual modification of the adult body form of Urochordates
C) larval Cephalochordates that developed the ability to reproduce sexually while retaining the larval body form
D) echinoderms with a post anal tail and notochord
E) segmented echinoderms

Question 30

Which of the following statements does NOT correctly describe differences between larval and adult tunicates?

A) Larval tunicates have a conspicuous notochord that is lost by the time they become adults.
B) Larval tunicates have a hollow dorsal nerve cord that is reduced to only a ganglion in the adult.
C) The tail of the larval tunicate is lost by the time it transforms into an adult.
D) The pharynx of the larval tunicate becomes more prominent in the adult.
E) The larval tunicate lacks an incurrent and excurrent siphon but the adult has both structures.

Question 31

The disease schistosomiasis is caused by a parasitic trematode.

Question 32

Tagmata are segments of the body that represent two or more previous body segments fused together.

Question 33

The diversification of flowering plants was responsible for the diversification of insects. Bloom's Level : Understand

Question 34

Autotomy is the ability of an animal to lose a body part and subsequently regenerate it.