Among those turbellarians possessing a digestive cavity,digestion is
A) extracellular only.
B) intracellular only.
C) accomplished before food is ingested.
D) both extracellular and intracellular.
E) accomplished in the pharynx.
Correct Answer:
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Q14: The free-living flatworms are classified in the
Q15: The free-swimming larval stage of some turbellarians
Q16: Among the flatworms,when a digestive tract is
Q17: The osmoregulatory organs of turbellarians are called
A)contractile
Q18: Asexual reproduction by fission in some turbellarians
Q20: Most turbellarian species
A)are marine scavengers.
B)are internal parasites
Q21: The lidlike hatch on a trematode egg
Q22: The larval stage of the beef tapeworm
Q23: Nemerteans differ from flatworms in that they
Q24: The proboscis worms belong to the phylum
A)Proboscisoidea.
B)Nematoda.
C)Gnathostomulida.
D)Aspidogastrea.
E)Nemertea.
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