Question 1

Predict the consequences of a gastrostomulidan with an impermeable outer covering.

Accepted Answer

A)  Nothing would change,as the outer cover is already impermeable.
B)  Reproduction would become impossible.
C)  Exchange of gases would not occur.
D)  Ingestion of nutrients would not occur.E) A) and B)
F) All of the above

Question 2

Which phyla have a characteristic number of cells the epithelia of different regions? Check all that apply.
____Rotifera
____Acanthocephala
_____Mesozoa
_____Gnathostomulida

Accepted Answer

__X__Rotifera
__X__A...

Question 3

Which of the following statements about planaria is NOT true?

Accepted Answer

A)  The rudimentary circulatory system has a small central heart
B)  Planaria cut in half regenerate to form two complete worms
C)  Movement occurs through ciliary cells and muscle movement
D)  Tissue levels include endoderm (inner) ,mesoderm (middle) ,and ectoderm (outer) 
E)  Cephalization consists of a brain and sense organs in a head regionF) C) and D)
G) A) and B)

Question 4

Beside "hunters" that seize prey,some rotifers are

Accepted Answer

A)  "netters" that spread a fishing net to ensnare prey.
B)  "trappers" that grasp prey and draw it into the rotifer mouth.
C)  "ambushers" that pounce on prey that passes by at a distance.
D)  "farmers" that grow food to eat.E) A) and C)
F) A) and D)

Question 5

If eggs or proglottids of the pork tapeworm are ingested,

Accepted Answer

A)  a hydatid cyst may form.
B)  nothing will form since we have to contract pork tapeworm from eating undercooked pork.
C)  cysticercosis may occur with resulting blindness or death.
D)  we may contract more pork tapeworms hanging in our intestine.
E)  None of the choices is correctF) A) and B)
G) A) and E)

Question 6

You are given a culture that contains gastrotrichs and gnathostomulidans.How could you specifically identify the gastrotrichs?

Accepted Answer

A)  Convex dorsum,flattened ventrum
B)  Presence of some monociliated cells
C)  Specialized respiratory structures
D)  Ability to endure low oxygenE) C) and D)
F) A) and D)

Question 7

If an individual turbellarian contains organs of both sexes,it is termed ______________ or hermaphroditic.

Accepted Answer

The answer of If an individual turbellarian contains organs of...

Question 8

In flame cells,

Accepted Answer

A)  light is detected.
B)  ciliated sperm are stored.
C)  undigested food is expelled.
D)  digestion of proteins takes place.
E)  flagella drive fluids through tubules for excretion.F) All of the above
G) C) and D)

Question 9

Humans become infected with Taenia saginatus when they

Accepted Answer

A)  eat poorly cooked fish.
B)  eat poorly cooked pork.
C)  eat poorly cooked beef.
D)  eat unwashed salads.
E)  All of the choices are correctF) All of the above
G) A) and D)

Question 10

Because they have three germ layers,flatworms and ribbon worms are _______________.

Accepted Answer

The answer of Because they have three germ layers,flatworms and...

Question 11

Marine forms of platyhelminths have a ciliated larvae that resembles which of the following?

Accepted Answer

A)  Trochophore
B)  Planula
C)  Miracidium
D)  Gemmule
E)  None of the choices is correctF) D) and E)
G) A) and B)

Question 12

The large posterior attachment organ of the adult monogenean is a/an

Accepted Answer

A)  rhabdite.
B)  pilidium.
C)  cirrus.
D)  hydatid.
E)  opisthaptor.F) A) and D)
G) B) and C)

Question 13

Rotifers that are "hunters" protect their hard jaws or _____ to seize prey.

Accepted Answer

A)  Mastix
B)  Trochal
C)  Lorica
D)  TrophiE) B) and D)
F) C) and D)

Question 14

A special cysticercus called a _______ grows slowly but can proliferate thousands of scolices to infect a carnivore.

Accepted Answer

A)  Hydatid cyst
B)  Pilidium larvae
C)  Cysticercosis
D)  Vitellaria
E)  RhynchocoelF) A) and E)
G) A) and D)

Question 15

"Endolecithal" describes a situation in which

Accepted Answer

A)  there is no yolk.
B)  yolk is contained in separate cells outside the zygote.
C)  yolk is provided inside the egg cell.
D)  yolk is found around the perimeter of the zygote.
E)  yolk is provided by the sperm cell.F) C) and D)
G) B) and C)

Question 16

The holdfast of a tapeworm is its _______________.

Accepted Answer

The answer of The holdfast of a tapeworm is its...

Question 17

The name of the free-swimming,ciliated stage that hatches from a trematode egg is the

Accepted Answer

A)  miracidium.
B)  sporocyst.
C)  cercaria.
D)  scolex.
E)  proglottid.F) A) and C)
G) B) and D)

Question 18

The long chains of bags of eggs,which hang behind the head of a tapeworm,is called a

Accepted Answer

A)  strobila.
B)  cercariae.
C)  sporocysts.
D)  scolex.
E)  hydatid.F) A) and B)
G) B) and C)

Question 19

Humans become infected with lung flukes by

Accepted Answer

A)  eating infected fish.
B)  eating infected crabs or crayfish.
C)  drinking water contaminated with eggs.
D)  wading in infected waters.
E)  eating undercooked pork.F) A) and E)
G) A) and B)

Question 20

Platyhelminthes have

Accepted Answer

A)  a flow-through digestive tract.
B)  flame cells.
C)  a blood-vascular system.
D)  an eversible proboscis.E) A) and B)
F) A) and C)

Exam 14: Acoelomorpha, Platyzoa, and Mesozoa

The holdfast of a tapeworm is its _______________.

Correct AnswerverifiedShow Answer

A special cysticercus called a _______ grows slowly but can proliferate thousands of scolices to infect a carnivore.

Correct AnswerverifiedShow Answer

You are given a culture that contains gastrotrichs and gnathostomulidans.How could you specifically identify the gastrotrichs?

Correct AnswerverifiedShow Answer

Which phyla have a characteristic number of cells the epithelia of different regions? Check all that apply. ____Rotifera ____Acanthocephala _____Mesozoa _____Gnathostomulida

Correct Answerverified__X__Rotifera__X__A...View AnswerShow Answer

If eggs or proglottids of the pork tapeworm are ingested,

Correct AnswerverifiedShow Answer

"Endolecithal" describes a situation in which

Correct AnswerverifiedShow Answer

The long chains of bags of eggs,which hang behind the head of a tapeworm,is called a

Correct AnswerverifiedShow Answer

Beside "hunters" that seize prey,some rotifers are

Correct AnswerverifiedShow Answer

Humans become infected with lung flukes by

Correct AnswerverifiedShow Answer

The large posterior attachment organ of the adult monogenean is a/an

Correct AnswerverifiedShow Answer

Rotifers that are "hunters" protect their hard jaws or _____ to seize prey.

Correct AnswerverifiedShow Answer

In flame cells,

Correct AnswerverifiedShow Answer

The name of the free-swimming,ciliated stage that hatches from a trematode egg is the

Correct AnswerverifiedShow Answer

Humans become infected with Taenia saginatus when they

Correct AnswerverifiedShow Answer

Because they have three germ layers,flatworms and ribbon worms are _______________.

Correct AnswerverifiedShow Answer

Predict the consequences of a gastrostomulidan with an impermeable outer covering.

Correct AnswerverifiedShow Answer

Which of the following statements about planaria is NOT true?

Correct AnswerverifiedShow Answer

If an individual turbellarian contains organs of both sexes,it is termed ______________ or hermaphroditic.

Correct AnswerverifiedShow Answer

Platyhelminthes have

Correct AnswerverifiedShow Answer

Marine forms of platyhelminths have a ciliated larvae that resembles which of the following?

Correct AnswerverifiedShow Answer

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Which phyla have a characteristic number of cells the epithelia of different regions? Check all that apply. __Rotifera Acanthocephala _Mesozoa ___Gnathostomulida

Correct Answer
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XRotifera
XA...
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