Question 1

Most animal species possess the necessary features to be classified in which phylum?

Accepted Answer

A)  Mollusca
B)  Arthropoda
C)  Chordata
D)  Echinodermata
E)  AnnelidaF) A) and E)
G) None of the above

Question 2

Sea stars and sea urchins operate their tube feet by

Accepted Answer

A)  a water vascular system that regulates water pressure.
B)  cilia transporting hemolymph from chamber to chamber.
C)  sticky threads leading from the mouth and primitive brain.
D)  actin and myosin fibers that slide and give muscle actions to the five arms or "rays."E) B) and C)
F) A) and B)

Question 3

Human tapeworm infections occur by

Accepted Answer

A)  eating insufficiently cooked infected pork or beef.
B)  being bitten by a mosquito.
C)  ingesting eggs in contaminated water.
D)  eating freshly peeled fruit.
E)  All of the choices are correct.F) C) and D)
G) None of the above

Question 4

Unique features of animals include ingesting their food,having a cell wall and the ability to move at some point in their life cycle.

Accepted Answer

A) True 
 B)False  False

Question 5

Identify which of the following feature(s) are found in the cnidarians but not in the comb jellies.

Accepted Answer

A)  They are free swimming invertebrates.
B)  They contain a capsule called a nematocyst.
C)  Produce movement by the beating of cilia.
D)  Much of the body is composed of a jellylike substance called mesoglea.
E)  These species can be found in the marine environment.F) B) and E)
G) C) and D)

Question 6

Marine annelids (polychaetes) are different than earthworms in that polychaetes

Accepted Answer

A)  lack the setae that earthworms have.
B)  have paddle-like parapodia that earthworms do not have.
C)  have segments,whereas marine annelids do not.
D)  lack a larval form,whereas earthworms have a larvae form.
E)  marine annelids have a well developed coelom,whereas earthworms do not.F) A) and C)
G) A) and B)

Question 7

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 E)
G) C) and D)

Question 8

In deuterostomes,

Accepted Answer

A)  cleavage is radial and the fate of the cells is indeterminate.
B)  spiral cleavage occurs.
C)  the fate of cells is fixed and determinate.
D)  the mouth appears at or near the blastopore.E) All of the above
F) A) and C)

Question 9

Which of the following features is common among the roundworms as well as the arthropods?

Accepted Answer

A)  Periodically shed their outer covering.
B)  Radial symmetry.
C)  Endoskeleton.
D)  Undergo metamorphosis.
E)  Segmentation is readily apparent.F) A) and D)
G) All of the above

Question 10

A recent study of the marine hawksbill turtles' stomach contents revealed that sponges constitute a major portion of their diet.Sponge beds are generally protected from predators by their calcium and silica crystals,but these were found in the turtles' digestive systems.These protective structures are called

Accepted Answer

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

Question 11

The structure that directs food into the body of a rotifer is called the corona.

Accepted Answer

A) True 
 B)False

Question 12

What is the function of the buds formed by hydras?

Accepted Answer

A)  They aid in digestion.
B)  They develop into cnidocytes and can be used in defense.
C)  They develop into the nerve net and are used to detect prey.
D)  They produce new epidermal tissue to replace the old tissue.
E)  They are a form of asexual reproduction.F) B) and D)
G) B) and C)

Question 13

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)  Shellfish seasonally produce toxic substances.
B)  Shellfish regularly consume poisonous red tide organisms.
C)  Most harmless native clams have been replaced by bad species.
D)  Shellfish filter-feed and concentrate the dilute pollutants from the water,thus acting as early warning indicators of severe pollution.E) A) and C)
F) All of the above

Question 14

Roundworms and arthropods are both ecdysozoans.This means they

Accepted Answer

A)  have a trochophore larvae.
B)  have a body cavity that is completely lined with mesoderm.
C)  have the anus arise at or near the blastopore.
D)  periodically shed their outer covering.
E)  None of the above are true.F) D) and E)
G) A) and E)

Question 15

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

Accepted Answer

A)  Animals are heterotrophic by ingestion or absorption.
B)  Animals produce gametes by meiosis.
C)  Animals digest their food internally.
D)  Animals are multicellular eukaryotes.
E)  The adult form is diploid in an alternation of generation life cycle.F) B) and D)
G) All of the above

Question 16

Which of these is a bivalve?

Accepted Answer

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

Question 17

Name one of the smallest,if not the smallest,animals that are sometimes referred to as "resurrection animalcules."

Accepted Answer

A)  planaria
B)  parasitic mites
C)  fruit flies
D)  parasitic
E)  rotifersF) None of the above
G) A) and E)

Question 18

Molluscs share a three-part body plan consisting of a

Accepted Answer

A)  scolex,proglottids,and an anus.
B)  corona,stomach,and intestines.
C)  visceral mass,mantle,and foot.
D)  eyespots,digestive system,and nervous system.E) A) and D)
F) C) and D)

Question 19

The segments of a tapeworm that contain female and male sex organs are called

Accepted Answer

A)  proglottids.
B)  cercariae.
C)  sporocysts.
D)  scolexes.
E)  glycocalyxes.F) C) and D)
G) B) and D)

Question 20

Earthworms possess both male and female organs on separate segments; thus,mating consists of "parallel parking" in opposite directions and cross-fertilizing.Given this,which of the following is (are) true?

Accepted Answer

A)  This is evidence of a primitive state that is generally less efficient than separate sexes.
B)  This is primarily to allow them to self-fertilize if no other worm is in their sector of the soil.
C)  This is an advantage since they can mate with any other earthworm of the same species that they encounter.
D)  Maintaining any system not clearly male or female is disadvantageous; the earthworm is trapped in an evolutionary dead end.E) A) and D)
F) B) and C) C

Exam 28: Invertebrate Evolution

Most animal species possess the necessary features to be classified in which phylum?

Correct Answer
verified

Sea stars and sea urchins operate their tube feet by

Correct Answer
verified

Human tapeworm infections occur by

Correct Answer
verified

Unique features of animals include ingesting their food,having a cell wall and the ability to move at some point in their life cycle.

Correct Answer
verified
False

Identify which of the following feature(s) are found in the cnidarians but not in the comb jellies.

Correct Answer
verified

Marine annelids (polychaetes) are different than earthworms in that polychaetes

Correct Answer
verified

Which of the following are NOT cnidaria?

Correct Answer
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In deuterostomes,

Correct Answer
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Which of the following features is common among the roundworms as well as the arthropods?

Correct Answer
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Correct Answer
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D

The structure that directs food into the body of a rotifer is called the corona.

Correct Answer
verified

What is the function of the buds formed by hydras?

Correct Answer
verified

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 Answer
verified

Roundworms and arthropods are both ecdysozoans.This means they

Correct Answer
verified

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

Correct Answer
verified

Which of these is a bivalve?

Correct Answer
verified

Name one of the smallest,if not the smallest,animals that are sometimes referred to as "resurrection animalcules."

Correct Answer
verified

Molluscs share a three-part body plan consisting of a

Correct Answer
verified

The segments of a tapeworm that contain female and male sex organs are called

Correct Answer
verified

Earthworms possess both male and female organs on separate segments; thus,mating consists of "parallel parking" in opposite directions and cross-fertilizing.Given this,which of the following is (are) true?

Correct Answer
verified
C

Exam 28: Invertebrate Evolution

Most animal species possess the necessary features to be classified in which phylum?

Correct AnswerverifiedShow Answer

Sea stars and sea urchins operate their tube feet by

Correct AnswerverifiedShow Answer

Human tapeworm infections occur by

Correct AnswerverifiedShow Answer

Unique features of animals include ingesting their food,having a cell wall and the ability to move at some point in their life cycle.

Correct AnswerverifiedFalse

Identify which of the following feature(s) are found in the cnidarians but not in the comb jellies.

Correct AnswerverifiedShow Answer

Marine annelids (polychaetes) are different than earthworms in that polychaetes

Correct AnswerverifiedShow Answer

Which of the following are NOT cnidaria?

Correct AnswerverifiedShow Answer

In deuterostomes,

Correct AnswerverifiedShow Answer

Which of the following features is common among the roundworms as well as the arthropods?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

The structure that directs food into the body of a rotifer is called the corona.

Correct AnswerverifiedShow Answer

What is the function of the buds formed by hydras?

Correct AnswerverifiedShow Answer

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 AnswerverifiedShow Answer

Roundworms and arthropods are both ecdysozoans.This means they

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of these is a bivalve?

Correct AnswerverifiedShow Answer

Name one of the smallest,if not the smallest,animals that are sometimes referred to as "resurrection animalcules."

Correct AnswerverifiedShow Answer

Molluscs share a three-part body plan consisting of a

Correct AnswerverifiedShow Answer

The segments of a tapeworm that contain female and male sex organs are called

Correct AnswerverifiedShow Answer

Earthworms possess both male and female organs on separate segments; thus,mating consists of "parallel parking" in opposite directions and cross-fertilizing.Given this,which of the following is (are) true?

Correct AnswerverifiedC

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False

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D

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C