The proboscis of nemerteans is held within a sheath called the
A) rhynchocoel.
B) gastrovascular cavity.
C) gastrocoel.
D) stylet.
E) anoplan.
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Q37: Scolex,neck,and _ comprise the three body regions
Q38: The oldest proglottids at the end of
Q39: The larval stage of the broad fish
Q40: Most flukes belong to the subclass
A)Aspidogastrea.
B)Monogenea.
C)Eucestoda.
D)Cestodaria.
E)Digenea.
Q41: Some members of a diverse group of
Q43: What is true regarding members of the
Q44: Rotifers derive their name from a characteristic
Q45: The helmet-shaped,ciliated larva of nemerteans is the
A)onchosphere.
B)Muller.
C)pilidium.
D)miracidium.
E)cercaria.
Q46: Rotifers exchange respiratory gases
A)across the body surface.
B)through
Q47: Acanthocephalans are commonly called
A)roundworms.
B)blood worms.
C)flatworms.
D)probosis worms.
E)spiny-headed worms.
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