The mastax of a rotifer is used for
A) respiration.
B) grinding food.
C) swimming.
D) pumping blooD.
Correct Answer:
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Q32: Acanthocephalans
A)parasitize fish,birds,and mammals.
B)are monoecious.
C)have a well-developed digestive
Q34: The monogenetic flukes
A)are mostly ectoparasites of fish.
B)are
Q34: Since flatworms and ribbon worms lack a
Q35: Rotifers
A)are primarily marine.
B)are dioecious.
C)lack an excretory system.
D)lack
Q38: Turbellarians have light-sensitive organs called _.
Q39: Free-living flatworms have
A)ocelli.
B)tactile cells.
C)chemoreceptors.
D)all of these
Q42: Most monogeneans are external parasites of _.
Q42: Turbellarians have rod-shaped _ in the epidermis
Q46: The free-swimming,ciliated stage that hatches from a
Q47: Trematodes have a body covering known as
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