Question 1

Which of the following statements is NOT true about the flatworms?

Accepted Answer

A)   Tapeworms have a ladder-type nervous system similar to other flatworms.
B)   Planaria contain pigmented, photosensitive eyespots.
C)   Liver flukes and blood flukes are parasites in humans only.
D)   Schistosomiasis is a common human blood disease caused by flukes in tropical areas.
E)   Tapeworms are hermaphroditic, having both male and female reproductive structures in each proglottid.F) D) and E)
G) C) and D)

Question 2

Which of the following is NOT a characteristic of echinoderms?

Accepted Answer

A)   adult is radially symmetrical
B)   locomotion by muscles
C)   endoskeleton of spiny, calcium-rich plates
D)   larva is bilaterally symmetrical
E)   both sexual and asexual reproductionF) A) and B)
G) C) and D)

Question 3

Which description best fits the lophotrochozoa?

Accepted Answer

A)   As embryos they have three germ layers that will develop into the organ level of organization as adults.
B)   As embryos they have two germ layers that will develop into the tissue level of organization as adults.
C)   Lophotrochozoa are deuterostomes.
D)   Lophotrochozoa are primarily a terrestrial group.
E)   The lophophore, a flagellated appendage, is used to define members of this group.F) B) and E)
G) A) and D)

Question 4

Which of the following is a way that crayfish and grasshoppers are different?

Accepted Answer

A)   Crayfish have an exoskeleton while grasshoppers do not.
B)   Grasshoppers have compound eyes while crayfish have a camera type of eye.
C)   Grasshoppers have well developed nervous systems while crayfish have a ladder network of nerves.
D)   Grasshoppers have spicules and tracheal tubes that serve as the means of gas exchange while crayfish have gills.
E)   Crayfish have an open circulatory system while grasshoppers have a closed circulatory system.F) B) and D)
G) C) and E) D

Question 5

If you live on a river delta or coastline,you may not be able to eat the local shellfish because of high levels of toxins,even though you may be able to drink the water taken from the same source.Why?

Accepted Answer

A)   Clams seasonally produce toxic substances.
B)   Shellfish regularly consume poisonous red tide organisms.
C)   Most harmless native clams have been replaced by bad species.
D)   Clams filter-feed and concentrate the dilute pollutants from the water, thus acting as early warning indicators of severe pollution.
E)   The toxins contained in the shellfish can't be broken down by your stomach, but toxins in the water can be.F) A) and B)
G) B) and D) D

Question 6

Filter feeders are usually

Accepted Answer

A)   active predators.
B)   sessile or relatively inactive.
C)   always herbivorous.
D)   squids.
E)   snails.F) A) and B)
G) A) and C)

Question 7

Sea stars and sea urchins operate their tube feet by

Accepted Answer

A)   a hydraulic system that regulates water pressure.
B)   cilia transporting hemolymph from chamber to chamber.
C)   sticky threads leading from the mouth.
D)   actin and myosin fibers that slide and give muscle actions to the five arms or "rays".
E)   an extensive net of nerve and muscle cells.F) C) and E)
G) C) and D)

Question 8

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 9

Which statement about sponges is NOT correct?

Accepted Answer

A)   The larval form is flagellated and able to swim to a suitable location.
B)   Sponges are classified on the basis of their type of skeletal material.
C)   Sponges resemble a colony of protozoan cells more than a multicellular animal.
D)   Sponges are thought to be on the evolutionary pathway leading to more complex animals such as corals and worms.
E)   Sponges can reproduce sexually or asexually.F) All of the above
G) B) and D)

Question 10

Which of the following organisms exhibit radial symmetry as adults?

Accepted Answer

A)   flatworms
B)   cnidarians
C)   roundworms
D)   clams
E)   fishF) D) and E)
G) B) and E)

Question 11

Respiratory structures in insects are

Accepted Answer

A)   commonly termed book lungs.
B)   spiracles and tracheae.
C)   hemolymphic.
D)   lamellae.
E)   lungs.F) A) and B)
G) B) and E)

Question 12

Which are NOT among the phylum Mollusca?

Accepted Answer

A)   clams
B)   squids
C)   lobsters
D)   nautiluses
E)   snailsF) C) and D)
G) A) and E)

Question 13

Which of the following statements about planaria is NOT true?

Accepted Answer

A)   There is a rudimentary circulatory system with a small central heart.
B)   Planaria cut in half can regenerate to form two complete worms.
C)   Active movement occurs through ciliary cells and muscle movement.
D)   Tissue levels include endoderm (inner) , mesoderm (middle) , and ectoderm (outer) .
E)   Cephalization is shown by the formation of a brain and sense organs in a head region.F) C) and E)
G) B) and D)

Question 14

Identify the features unique to the molluscs.

Accepted Answer

1.Molluscs contain a visceral mass that ...

Question 15

Sea stars reproduce

Accepted Answer

A)   by budding.
B)   by asexual processes alone.
C)   asexually by fragmentation.
D)   by sexual processes only.
E)   by sexual means and also by asexual fragmentation.F) C) and E)
G) C) and D)

Question 16

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 C)
G) C) and D)

Question 17

Which of the following organisms exhibit complete metamorphosis?

Accepted Answer

A)   crayfish
B)   starfish
C)   grasshoppers
D)   butterfly
E)   lobstersF) A) and B)
G) A) and C)

Question 18

Which of the following is correct in matching the common name with a phylum name?

Accepted Answer

A)   planarian-Nematoda
B)   fluke-Platyhelminthes
C)   coral-Porifera
D)   roundworm-Cnidaria
E)   sponge-ArthropodaF) A) and D)
G) A) and C)

Question 19

Which of the following are NOT cnidaria?

Accepted Answer

A)   corals
B)   planaria
C)   sea anemones
D)   hydrozoa
E)   Portuguese man-of-warF) B) and D)
G) D) and E)

Question 20

The major insect body parts are

Accepted Answer

A)   head, cephalothorax, and abdomen.
B)   cephalothorax, midsection, and abdomen.
C)   head, thorax, and abdomen.
D)   head, pyothorax, and metathorax.
E)   head, cephalothorax, and genitalia.F) All of the above
G) None of the above C

Exam 31: Animals: the Invertebrates

Which of the following statements is NOT true about the flatworms?

Correct AnswerverifiedShow Answer

Which of the following is NOT a characteristic of echinoderms?

Correct AnswerverifiedShow Answer

Which description best fits the lophotrochozoa?

Correct AnswerverifiedShow Answer

Which of the following is a way that crayfish and grasshoppers are different?

Correct AnswerverifiedD

If you live on a river delta or coastline,you may not be able to eat the local shellfish because of high levels of toxins,even though you may be able to drink the water taken from the same source.Why?

Correct AnswerverifiedD

Filter feeders are usually

Correct AnswerverifiedShow Answer

Sea stars and sea urchins operate their tube feet by

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which statement about sponges is NOT correct?

Correct AnswerverifiedShow Answer

Which of the following organisms exhibit radial symmetry as adults?

Correct AnswerverifiedShow Answer

Respiratory structures in insects are

Correct AnswerverifiedShow Answer

Which are NOT among the phylum Mollusca?

Correct AnswerverifiedShow Answer

Which of the following statements about planaria is NOT true?

Correct AnswerverifiedShow Answer

Identify the features unique to the molluscs.

Correct Answerverified1.Molluscs contain a visceral mass that ...View AnswerShow Answer

Sea stars reproduce

Correct AnswerverifiedShow Answer

Which of the following statements is NOT correct about cnidaria?

Correct AnswerverifiedShow Answer

Which of the following organisms exhibit complete metamorphosis?

Correct AnswerverifiedShow Answer

Which of the following is correct in matching the common name with a phylum name?

Correct AnswerverifiedShow Answer

Which of the following are NOT cnidaria?

Correct AnswerverifiedShow Answer

The major insect body parts are

Correct AnswerverifiedC

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1.Molluscs contain a visceral mass that ...
View Answer

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C