Question 1

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) C) and D)

Question 2

Which of the following organisms lives between sand grains and wasn't described until 2000?

Accepted Answer

A)   Micrognathozoans
B)   Rotifers
C)   Gastrotrichs
D)   AcanthocephalansE) A) and B)
F) A) and C)

Question 3

Since flatworms and ribbon worms lack a coelom or a pseudocoel,they are termed _____________ animals.

Accepted Answer

The answer of Since flatworms and ribbon worms lack a...

Question 4

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) B) and C)
G) All of the above

Question 5

In tapeworms,the region just behind the scolex where new proglottids are differentiated is the

Accepted Answer

A)   vitellaria.
B)   pilidium.
C)   strobila.
D)   hydatid.
E)   germinative zone.F) B) and E)
G) A) and B)

Question 6

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 are correctF) B) and D)
G) A) and E)

Question 7

The correct sequence of development in a typical fluke life cycle is

Accepted Answer

A)   egg, miracidium, cercaria, sporocyst.
B)   egg, miracidium, sporocyst, cercaria.
C)   egg, sporocyst, cercaria, miracidium.
D)   egg, cercaria, miracidium, sporocyst.
E)   egg, sporocyst, miracidium, cercaria.F) B) and C)
G) All of the above

Question 8

Rotifers combine ovaries and yolk glands to form a _____ that supplies yolk to eggs through cytoplasmic bridges.

Accepted Answer

A)   Mastax
B)   Trochal
C)   Lorica
D)   GermovitellariaE) A) and C)
F) None of the above

Question 9

The monogenetic flukes

Accepted Answer

A)   are mostly ectoparasites.
B)   are usually found in rabbits.
C)   require an intermediate and a definitive host.
D)   All of the choices are correct
E)   None of the choices are correctF) B) and D)
G) A) and E)

Question 10

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

Accepted Answer

A)   Mastix
B)   Trochal
C)   Lorica
D)   TrophiE) C) and D)
F) None of the above

Question 11

The mastix of a rotifer is used for

Accepted Answer

A)   respiration.
B)   capturing and grinding food.
C)   swimming.
D)   pumping blood.E) A) and D)
F) B) and D)

Question 12

Taenia solium is a dangerous tapeworm because humans can serve as its ______________ host.

Accepted Answer

The answer of Taenia solium is a dangerous tapeworm because...

Question 13

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) None of the above
G) A) and E)

Question 14

Most monogeneans are external parasites of ____________.

Accepted Answer

The answer of Most monogeneans are external parasites of ____________....

Question 15

Which of the following is not a characteristic of Trochophore larvae?

Accepted Answer

A)   Have a prominent circlet of cilia
B)   Are top-shaped
C)   They occur in the early development of marine forms of Annelida
D)   Their bodies are opaque
E)   They sometimes contain accessory cilia circletsF) D) and E)
G) A) and B)

Question 16

Fertilization in rotifers is acheived

Accepted Answer

A)   externally with both eggs and sperm shed into the water.
B)   by normal copulation of a penis and vaginal pore.
C)   by transfer of sperm in a gelatinous spermatophore packet.
D)   by hypodermic impregnation injecting sperm into the pseudocoel.E) All of the above
F) C) and D)

Question 17

Trematodes have a body covering known as a ______________.

Accepted Answer

The answer of Trematodes have a body covering known as...

Question 18

Ribbon worms are

Accepted Answer

A)   carnivores in most cases.
B)   nearly all marine dwellers.
C)   nonparasitic.
D)   mostly dioecious.
E)   All of the choices are correctF) C) and D)
G) B) and C)

Question 19

The main reproductive body "segment" of the cestode is called the ____________.

Accepted Answer

The answer of The main reproductive body "segment" of the...

Question 20

In flame cells,

Accepted Answer

A)   light is detected.
B)   ciliated sperm are stored.
C)   undigested food is expelled.
D)   slow fires burn food for energy.
E)   cilia drive fluids through tubules for excretion.F) B) and E)
G) A) and E)

Exam 14: Acoelomorpha,Platyzoa,and Mesozoa

Humans become infected with Taenia saginatus when they

Correct AnswerverifiedShow Answer

The mastix of a rotifer is used for

Correct AnswerverifiedShow Answer

Taenia solium is a dangerous tapeworm because humans can serve as its ______________ host.

Correct AnswerverifiedShow Answer

The correct sequence of development in a typical fluke life cycle is

Correct AnswerverifiedShow Answer

Rotifers combine ovaries and yolk glands to form a _____ that supplies yolk to eggs through cytoplasmic bridges.

Correct AnswerverifiedShow Answer

The monogenetic flukes

Correct AnswerverifiedShow Answer

Fertilization in rotifers is acheived

Correct AnswerverifiedShow Answer

Trematodes have a body covering known as a ______________.

Correct AnswerverifiedShow Answer

The main reproductive body "segment" of the cestode is called the ____________.

Correct AnswerverifiedShow Answer

In tapeworms,the region just behind the scolex where new proglottids are differentiated is the

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Most monogeneans are external parasites of ____________.

Correct AnswerverifiedShow Answer

Since flatworms and ribbon worms lack a coelom or a pseudocoel,they are termed _____________ animals.

Correct AnswerverifiedShow Answer

Which of the following organisms lives between sand grains and wasn't described until 2000?

Correct AnswerverifiedShow Answer

In flame cells,

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of Trochophore larvae?

Correct AnswerverifiedShow Answer

Humans become infected with lung flukes by

Correct AnswerverifiedShow Answer

Ribbon worms are

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If eggs or proglottids of the pork tapeworm are ingested,

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified