Question 1

Planaria feed by

Accepted Answer

A)  attaching with a sucker(s) and extracting blood.
B)  tearing and sucking food particles via a muscular pharynx.
C)  slurping food particles through a mouth and excreting waste via an anus.
D)  soaking all nutrients from the environment through its thin epidermal surface.
E)  grabbing food with tentacles and pulling them into a ventrally located mouth.F) A) and C)
G) A) and E)

Question 2

The complex eye that can distinguish shapes is found

Accepted Answer

A)  only in advanced vertebrates.
B)  in molluscs and indicates that vertebrate eyes originated with ancestors common with this group.
C)  in molluscs but the eye structure evolved differently.
D)  in arthropods and indicates that vertebrate eyes originated with ancestors common with this group.
E)  in echinoderms and indicates that vertebrate eyes originated with ancestors common with this group.F) C) and D)
G) A) and E)

Question 3

A recent study of the marine hawksbill turtle's stomach contents revealed that sponges constitute a major portion of their diet.Sponge beds are generally protected from predators by the sponge's calcium and silica crystals,but these were found in quantity in the turtles' digestive systems.These structures that protect the sponges from most predators,but not turtles,are

Accepted Answer

A)  amoebocytes.
B)  the osculum.
C)  choanocytes.
D)  spicules.
E)  spongin.F) C) and D)
G) A) and B)

Question 4

Which of the following organisms show the typical method of acquiring food that is found in animals?

Accepted Answer

A)  euglena,who are autotrophic and heterotrophic
B)  basidiomycetes,club fungi,who decompose wood and other plant material
C)  earthworms,annelids,who feed on any available organic matter that they can take into their mouths
D)  volvox,a colonial alga that is autotrophic
E)  archaea,who are chemotrophicF) None of the above
G) All of the above

Question 5

Which of the following types of skeletal material is NOT found in at least some sponges?

Accepted Answer

A)  calcium carbonate
B)  silica
C)  spicules
D)  spongin
E)  muscleF) A) and E)
G) A) and B)

Question 6

Animals that have no particular symmetry exhibit

Accepted Answer

A)  asymmetry.
B)  radial symmetry.
C)  bilateral symmetry.
D)  trilateral symmetry.
E)  spherical symmetry.F) C) and E)
G) D) and E)

Question 7

The most likely ancestors of the chordates are considered to be echinoderms because

Accepted Answer

A)  tunicates are echinoderms.
B)  there is a direct lineage from sea stars to tunicates.
C)  embryos of echinoderms and chordate embryos are deuterostomes.
D)  adult echinoderms display similar characteristics as adult chordates.
E)  the nervous system of echinoderms is similar to that of chordates.F) A) and E)
G) A) and B)

Question 8

The cephalopods resemble other molluscs because they have

Accepted Answer

A)  focusing camera-type eyes.
B)  a siphon for jet propulsion.
C)  a parrot-like beak for tearing prey.
D)  well-developed brains with high learning capacity.
E)  most of the internal organs located in a visceral mass.F) B) and D)
G) C) and D)

Question 9

Which of the following is NOT true about protostomes?

Accepted Answer

A)  They are types of advanced invertebrates.
B)  They form a true coelom.
C)  The first opening during embryonic development becomes the anus.
D)  They will become mollusks,annelids,and arthropods.
E)  They are more advanced than acoelomates,but not as advanced as deuterostomes.F) C) and E)
G) A) and B)

Question 10

Because they have nerve fibers and muscle fibers,hydra are capable of directional movement.These nerve and muscle fibers are found

Accepted Answer

A)  in the gastrodermis.
B)  in the epidermis.
C)  in the mesoglea.
D)  in the gastrodermis; muscle fibers are in the ectodermis.
E)  just under the epidermis; muscle fibers are found in the gastrodermis.F) D) and E)
G) C) and E)

Question 11

Which of the following statements is NOT correct about cnidaria?

Accepted Answer

A)  The adult body is bilaterally symmetrical.
B)  Most are found in shallow coastal marine environments.
C)  There are two tissue layers: an outer epidermis and inner gastrodermis.
D)  Stinging cells contain a threadlike nematocyst released to capture prey.
E)  A jellylike mesoglea contains cells that form a nerve net throughout the body.F) B) and E)
G) A) and E)

Question 12

Which of the following organisms are considered advanced invertebrates with a true coelom?

Accepted Answer

A)  sponges
B)  hydras
C)  flatworms
D)  roundworms
E)  earthwormsF) B) and C)
G) A) and B)

Question 13

How could you possibly become infected with adult tapeworms?

Accepted Answer

A)  eating insufficiently cooked pork
B)  being bitten by a mosquito
C)  ingesting eggs in contaminated water
D)  eating freshly peeled fruit
E)  wading in contaminated waterF) B) and E)
G) A) and B)

Question 14

Which of the following is characteristic of flukes?

Accepted Answer

A)  Flukes are ectoparasites of invertebrates.
B)  Most flukes have separate sexes.
C)  Flukes are covered by a ciliated integument.
D)  Flukes possess an oral sucker that is surrounded by a nonsensory papilla.
E)  Flukes have a well-developed alimentary canal.F) A) and D)
G) A) and B)

Question 15

Which of the following is generally NOT a characteristic of all animals?

Accepted Answer

A)  They ingest food that is digested in a central cavity.
B)  Usually undergo sexual reproduction.
C)  They produce an embryo that undergoes development in stages.
D)  Animals range from unspecialized single-celled to specialized multicellular forms.
E)  The adult form is diploid.F) A) and B)
G) C) and E)

Question 16

Which statement is NOT true about echinoderms?

Accepted Answer

A)  The exoskeleton is made up of bony tissue.
B)  Gas exchange occurs through gills on the skin.
C)  Larvae are free-swimming and bilaterally symmetrical.
D)  A water vascular system allows the tube feet to produce suction.
E)  Symmetry is radial in the adult,usually with parts in fives or multiples of five.F) A) and D)
G) D) and E)

Question 17

Which of these is NOT a characteristic of sponges?

Accepted Answer

A)  sessile filter feeders
B)  body wall has two cell layers
C)  Flagellated collar cells move water.
D)  Water enters through a single cavity,the osculum.
E)  Amoeboid cells transport food and make skeletal fibers and gametes.F) B) and C)
G) C) and E)

Question 18

The ____ of the tapeworm contains both male and female sex organs and becomes filled with developing embryos.

Accepted Answer

A)  proglottids
B)  scolex
C)  cyst
D)  gastrovascular cavity
E)  nematocystF) B) and D)
G) A) and D)

Question 19

The stinging cells or nematocysts are characteristic of

Accepted Answer

A)  sponges.
B)  clams.
C)  cnidarians.
D)  flatworms.
E)  roundworms.F) C) and D)
G) None of the above

Question 20

A sponge actually feeds by

Accepted Answer

A)  acting as a net in a current that sweeps food particles through it.
B)  squeezing the spongocoel cavity and sucking debris in and out through the osculum.
C)  the beating of the flagella of collar cells,forming a current; food is absorbed by collar cells.
D)  the beating collar cells form a current from osculum to pores; the food is engulfed by amoebocytes in the central cavity of the sponge.
E)  water the moves gently through the sponge and the amoebocytes that engulf passing food.F) B) and C)
G) A) and E)

Exam 31: Animals: Part I

Which of the following organisms are considered advanced invertebrates with a true coelom?

Correct Answer
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Correct Answer
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Which of these is NOT a characteristic of sponges?

Correct Answer
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Which of the following organisms show the typical method of acquiring food that is found in animals?

Correct Answer
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A sponge actually feeds by

Correct Answer
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The stinging cells or nematocysts are characteristic of

Correct Answer
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The ____ of the tapeworm contains both male and female sex organs and becomes filled with developing embryos.

Correct Answer
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Animals that have no particular symmetry exhibit

Correct Answer
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Which statement is NOT true about echinoderms?

Correct Answer
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Which of the following is characteristic of flukes?

Correct Answer
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The complex eye that can distinguish shapes is found

Correct Answer
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The cephalopods resemble other molluscs because they have

Correct Answer
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Which of the following is NOT true about protostomes?

Correct Answer
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Planaria feed by

Correct Answer
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Which of the following is generally NOT a characteristic of all animals?

Correct Answer
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Because they have nerve fibers and muscle fibers,hydra are capable of directional movement.These nerve and muscle fibers are found

Correct Answer
verified

How could you possibly become infected with adult tapeworms?

Correct Answer
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The most likely ancestors of the chordates are considered to be echinoderms because

Correct Answer
verified

Which of the following statements is NOT correct about cnidaria?

Correct Answer
verified

Which of the following types of skeletal material is NOT found in at least some sponges?

Correct Answer
verified

Exam 31: Animals: Part I

Which of the following organisms are considered advanced invertebrates with a true coelom?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of these is NOT a characteristic of sponges?

Correct AnswerverifiedShow Answer

Which of the following organisms show the typical method of acquiring food that is found in animals?

Correct AnswerverifiedShow Answer

A sponge actually feeds by

Correct AnswerverifiedShow Answer

The stinging cells or nematocysts are characteristic of

Correct AnswerverifiedShow Answer

The ____ of the tapeworm contains both male and female sex organs and becomes filled with developing embryos.

Correct AnswerverifiedShow Answer

Animals that have no particular symmetry exhibit

Correct AnswerverifiedShow Answer

Which statement is NOT true about echinoderms?

Correct AnswerverifiedShow Answer

Which of the following is characteristic of flukes?

Correct AnswerverifiedShow Answer

The complex eye that can distinguish shapes is found

Correct AnswerverifiedShow Answer

The cephalopods resemble other molluscs because they have

Correct AnswerverifiedShow Answer

Which of the following is NOT true about protostomes?

Correct AnswerverifiedShow Answer

Planaria feed by

Correct AnswerverifiedShow Answer

Which of the following is generally NOT a characteristic of all animals?

Correct AnswerverifiedShow Answer

Because they have nerve fibers and muscle fibers,hydra are capable of directional movement.These nerve and muscle fibers are found

Correct AnswerverifiedShow Answer

How could you possibly become infected with adult tapeworms?

Correct AnswerverifiedShow Answer

The most likely ancestors of the chordates are considered to be echinoderms because

Correct AnswerverifiedShow Answer

Which of the following statements is NOT correct about cnidaria?

Correct AnswerverifiedShow Answer

Which of the following types of skeletal material is NOT found in at least some sponges?

Correct AnswerverifiedShow Answer

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