Question 1

Larval Trichinella worms live in the

Accepted Answer

A)  liver.
B)  lungs.
C)  lymph glands.
D)  skeletal muscle of pork.
E)  water.F) A) and B)
G) C) and D)

Question 2

If the water vascular system of the echinoderm was eliminated,which echinoderm function would not exist anymore?

Accepted Answer

A)  locomotion
B)  respiration
C)  circulation
D)  digestion
E)  sensing the environmentF) A) and D)
G) A) and E)

Question 3

If you play with a living anemone with a probe,it will withdraw even if you vibrate the probe like prey would vibrate; it also withdraws if you just add sugar.However,it reaches out and grasps an object that both vibrates and tastes like food.The use of such a double system prevents unnecessary firing of expensive nematocysts.Why are nematocysts "expensive"?

Accepted Answer

A)  The organism dies without nematocysts.
B)  The research equipment to detect them is very expensive.
C)  Nematocysts are used in medicine and are very expensive to harvest.
D)  The nematocyst is very complex and most likely costs the anemone much energy to build.
E)  The nematocyst can only be used for food and doesn't "fire" for non-food objects.F) B) and C)
G) D) and E)

Question 4

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

Accepted Answer

A)  There are three complete tissue layers.
B)  Flatworms may be either free living or parasitic.
C)  Flatworms have a sac body plan,with only a mouth and no anus.
D)  Parasitic flatworms have a well-developed head with eyespots and nerves concentrated into a brain.
E)  Most planaria are found in marine environments,but some dwell in freshwater and moist terrestrial environments.F) A) and B)
G) A) and C)

Question 5

An arachnid differs from a crustacean because

Accepted Answer

A)  arachnids have book gills.
B)  arachnids are mostly aquatic and crustaceans are mostly terrestrial.
C)  only arachnids shed their exoskeletons.
D)  arachnids have two major body segments,the cephalothorax and abdomen,while crustaceans have three body segments.
E)  arachnids have four pairs of walking legs.F) None of the above
G) A) and D)

Question 6

A major characteristic of the arthropods is the presence of

Accepted Answer

A)  flame cells.
B)  radial symmetry.
C)  a soft exoskeleton.
D)  a closed circulatory system.
E)  jointed appendages.F) B) and E)
G) B) and C)

Question 7

If a sponge is pressed through a coarse cloth bag and whole cells are extruded through the holes.The cells will then

Accepted Answer

A)  reproduce sexually.
B)  die from being separated.
C)  form spicules in the pattern of the cloth.
D)  all go back to primitive cells and soon differentiate into another sponge.
E)  reassemble into a new organized sponge with each cell resuming its original job.F) B) and C)
G) B) and D) E

Question 8

A sea star's nervous system includes

Accepted Answer

A)  no actual nerve cells.
B)  a complex of nerve ganglia in each ray.
C)  a central nervous system,including a brain.
D)  a central nerve ring that gives off radial nerves in each arm.
E)  a dorsal hollow nerve cord.F) B) and E)
G) A) and E)

Question 9

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 present in the water.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.F) B) and E)
G) A) and E)

Question 10

Which statement is NOT true about invertebrate animals?

Accepted Answer

A)  The vast majority of animal species are invertebrates.
B)  Many invertebrate species live in a marine environment.
C)  Most animal phyla are invertebrates.
D)  All major invertebrate groups arose from protistan ancestors.
E)  Invertebrates lack a nervous system.F) D) and E)
G) C) and D) E

Question 11

Which of the following is NOT characteristic of earthworms?

Accepted Answer

A)  segmentation
B)  expanded dorsal surface of the intestine called a typhlosole
C)  hermaphroditic
D)  paired nephridia in each segment
E)  dorsal solid nerve cordF) A) and E)
G) D) and E)

Question 12

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) B) and C)
G) B) and D)

Question 13

____ are animals that have three pairs of legs,a tympanum for reception of sound waves,and Malpighian tubules for excretion.

Accepted Answer

A)  Starfish
B)  Lancelets
C)  Crayfish
D)  Grasshoppers
E)  EarthwormsF) None of the above
G) B) and E)

Question 14

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) A) and B)
G) B) and D) A

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) C) and E)
G) A) and E)

Question 16

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 E)
G) B) and D)

Question 17

Which pair exhibits the closest relationship?

Accepted Answer

A)  spider-tick
B)  housefly-mite
C)  earthworm-grasshopper
D)  crayfish-planarian
E)  scorpion-clamF) C) and E)
G) None of the above

Question 18

Tapeworms are specialized for parasitism by an excessive development of which system?

Accepted Answer

A)  muscular
B)  reproductive
C)  excretory
D)  circulatory
E)  digestiveF) A) and E)
G) B) and E)

Question 19

Sponges are filter feeders and are usually

Accepted Answer

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

Question 20

A floating Portuguese man-of-war is

Accepted Answer

A)  a cubozoan.
B)  merely an inflated,noncircular jellyfish.
C)  a free-swimming polyp in the hydra group.
D)  the first animal with complete organ systems.
E)  a colony of polyps composed of different types of individuals.F) None of the above
G) A) and E)

Exam 31: Animals: Part I

Larval Trichinella worms live in the

Correct Answer
verified

If the water vascular system of the echinoderm was eliminated,which echinoderm function would not exist anymore?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

An arachnid differs from a crustacean because

Correct Answer
verified

A major characteristic of the arthropods is the presence of

Correct Answer
verified

If a sponge is pressed through a coarse cloth bag and whole cells are extruded through the holes.The cells will then

Correct Answer
verified
E

A sea star's nervous system includes

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 present in the water.Why?

Correct Answer
verified

Which statement is NOT true about invertebrate animals?

Correct Answer
verified
E

Which of the following is NOT characteristic of earthworms?

Correct Answer
verified

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

Correct Answer
verified

____ are animals that have three pairs of legs,a tympanum for reception of sound waves,and Malpighian tubules for excretion.

Correct Answer
verified

Which of the following statements about planaria is NOT true?

Correct Answer
verified
A

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

Correct Answer
verified

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

Correct Answer
verified

Which pair exhibits the closest relationship?

Correct Answer
verified

Tapeworms are specialized for parasitism by an excessive development of which system?

Correct Answer
verified

Sponges are filter feeders and are usually

Correct Answer
verified

A floating Portuguese man-of-war is

Correct Answer
verified

Exam 31: Animals: Part I

Larval Trichinella worms live in the

Correct AnswerverifiedShow Answer

If the water vascular system of the echinoderm was eliminated,which echinoderm function would not exist anymore?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

An arachnid differs from a crustacean because

Correct AnswerverifiedShow Answer

A major characteristic of the arthropods is the presence of

Correct AnswerverifiedShow Answer

If a sponge is pressed through a coarse cloth bag and whole cells are extruded through the holes.The cells will then

Correct AnswerverifiedE

A sea star's nervous system includes

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 present in the water.Why?

Correct AnswerverifiedShow Answer

Which statement is NOT true about invertebrate animals?

Correct AnswerverifiedE

Which of the following is NOT characteristic of earthworms?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

____ are animals that have three pairs of legs,a tympanum for reception of sound waves,and Malpighian tubules for excretion.

Correct AnswerverifiedShow Answer

Which of the following statements about planaria is NOT true?

Correct AnswerverifiedA

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

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

Correct AnswerverifiedShow Answer

Which pair exhibits the closest relationship?

Correct AnswerverifiedShow Answer

Tapeworms are specialized for parasitism by an excessive development of which system?

Correct AnswerverifiedShow Answer

Sponges are filter feeders and are usually

Correct AnswerverifiedShow Answer

A floating Portuguese man-of-war is

Correct AnswerverifiedShow Answer

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E

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E

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A

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