Question 1

Which of the following statements about sponges is NOT correct?

Accepted Answer

A)   Sponges have no nerve fibers.
B)   Sponges have no fully developed muscle fibers.
C)   Amoeboid cells capture food particles from the water.
D)   Sponges may reproduce asexually by budding or by regeneration from a small piece.
E)   Cells of a single sponge will recognize others of the same kind and reaggregate if the cells are separated and allowed to reassociate.F) A) and C)
G) A) and B)

Question 2

List the 5 general characteristics shared by animals.

Accepted Answer

1.Animals typically have the power of lo...

Question 3

Ascaris is considered to be a(n)

Accepted Answer

A)   flatworm.
B)   earthworm.
C)   roundworm.
D)   cnidarian.
E)   arthropod.F) None of the above
G) A) and D)

Question 4

It is NOT correct to say that arthropods have

Accepted Answer

A)   a solid ventral nerve cord.
B)   an open circulatory system.
C)   a well-developed nervous system.
D)   jointed appendages and a segmented body.
E)   a tough exoskeleton that grows by expansion.F) C) and D)
G) B) and C)

Question 5

A closed circulatory system is found in

Accepted Answer

A)   insects.
B)   snails.
C)   clams.
D)   earthworms.
E)   scorpions.F) D) and E)
G) B) and E)

Question 6

Both corals and calcareous sponges have calcium carbonate structures.What is the relationship between these two groups?

Accepted Answer

A)   The calcareous sponges were ancestors of the corals.
B)   The corals were ancestors of the calcareous sponges.
C)   Both use the calcium carbonate to form a rock-like or crusty basal skeletal structure.
D)   The corals are actually colonial forms of the independent calcareous sponges.
E)   The sponges use calcium carbonate to form sharp spicules while the corals independently use the same material to form a skeleton.F) A) and E)
G) B) and C)

Question 7

The stinging cells or nematocysts are characteristic of

Accepted Answer

A)   sponges.
B)   clams.
C)   cnidarians.
D)   flatworms.
E)   roundworms.F) B) and C)
G) B) and E)

Question 8

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 C)
G) A) and B)

Question 9

The water vascular system of the echinoderm is used for

Accepted Answer

A)   locomotion.
B)   respiration.
C)   circulation.
D)   digestion.
E)   sensing the environment.F) C) and D)
G) A) and D)

Question 10

The two layers of tissue in a hydra are

Accepted Answer

A)   The epidermis which covers and protects and the inner layer that contains flame cells.
B)   The epidermis that covers and protects and the gastrodermis where cells that complete digestion are found.
C)   The epidermis that contains flame cells and the gastrodermis that contains the nephridia.
D)   The epidermis that covers and protects and the gastrodermis that contains the nephridia.
E)   The epidermis that covers and protects and the gastrodermis that contains a ladder-like nervous system.F) C) and D)
G) B) and C)

Question 11

Why are real bath sponges so soft?

Accepted Answer

A)   The silica is washed away and the calcium carbonate remains.
B)   The spongin spicules are washed away and the silky silica remains.
C)   The choanocytes are softer and the amoebocytes are washed away.
D)   The harder silica or calcium spicules are absent and the softer spongin remains.
E)   The silica and spicules are washed away and the spongin treated with softening chemicals.F) A) and B)
G) None of the above

Question 12

Fertilization in the earthworm is accomplished by the use of the

Accepted Answer

A)   nephridia.
B)   clitellum.
C)   flame cells.
D)   trachea.
E)   typhlosole.F) D) and E)
G) C) and D)

Question 13

List the five features that have contributed to the success of the arthropods.

Accepted Answer

1.A rigid but jointed exoskele...

Question 14

The molluscs look so different,and yet we can tell they are related because they all

Accepted Answer

A)   are segmented.
B)   are predators.
C)   have an external skeleton.
D)   have a mantle, visceral mass, and a foot.
E)   have shells.F) A) and D)
G) A) and E)

Question 15

When an earthworm secretes a slime layer to receive eggs and sperm and form a ''cocoon,'' this secretion is produced by the

Accepted Answer

A)   annulations.
B)   peritoneum.
C)   clitellum.
D)   nephridium.
E)   prostomium.F) A) and B)
G) A) and C)

Question 16

Planaria move by

Accepted Answer

A)   flame cells.
B)   small pseudopodia.
C)   lateral undulation of muscles.
D)   expulsion of fluids as with squid.
E)   secreting a film of mucus and pushing against it with epidermal cilia.F) A) and C)
G) B) and D)

Question 17

Which of these is a bivalve?

Accepted Answer

A)   slug
B)   octopus
C)   earthworm
D)   snail
E)   oysterF) A) and E)
G) D) and E)

Question 18

An insect circulatory system is best described as

Accepted Answer

A)   totally closed like ours, with arteries and veins.
B)   similar to ours with general closed vessels but no distinct arteries and veins.
C)   an open system that mostly washes hemolymph "blood" through the hemocoel.
D)   totally absent, each body cell manages on its own to gain food and get rid of wastes.
E)   containing five pairs of "hearts".F) B) and E)
G) C) and D)

Question 19

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) A) and B)
G) A) and E)

Question 20

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) None of the above

Exam 31: Animals: the Invertebrates

List the 5 general characteristics shared by animals.

Correct Answerverified1.Animals typically have the power of lo...View AnswerShow Answer

It is NOT correct to say that arthropods have

Correct AnswerverifiedShow Answer

List the five features that have contributed to the success of the arthropods.

Correct Answerverified1.A rigid but jointed exoskele...View AnswerShow Answer

Which of the following is characteristic of flukes?

Correct AnswerverifiedShow Answer

The water vascular system of the echinoderm is used for

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of these is a bivalve?

Correct AnswerverifiedShow Answer

The two layers of tissue in a hydra are

Correct AnswerverifiedShow Answer

The molluscs look so different,and yet we can tell they are related because they all

Correct AnswerverifiedShow Answer

Which of the following statements about sponges is NOT correct?

Correct AnswerverifiedShow Answer

Animals that have no particular symmetry exhibit

Correct AnswerverifiedShow Answer

Both corals and calcareous sponges have calcium carbonate structures.What is the relationship between these two groups?

Correct AnswerverifiedShow Answer

A closed circulatory system is found in

Correct AnswerverifiedShow Answer

When an earthworm secretes a slime layer to receive eggs and sperm and form a ''cocoon,'' this secretion is produced by the

Correct AnswerverifiedShow Answer

The stinging cells or nematocysts are characteristic of

Correct AnswerverifiedShow Answer

Ascaris is considered to be a(n)

Correct AnswerverifiedShow Answer

Planaria move by

Correct AnswerverifiedShow Answer

An insect circulatory system is best described as

Correct AnswerverifiedShow Answer

Fertilization in the earthworm is accomplished by the use of the

Correct AnswerverifiedShow Answer

Why are real bath sponges so soft?

Correct AnswerverifiedShow Answer

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1.Animals typically have the power of lo...
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1.A rigid but jointed exoskele...
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