Annelids are thought to be related to molluscs because
A) they have a similar nervous system.
B) a shared metameric body plan though the mechanism of segmentation may be different.
C) they both have a similar trochophore larva.
D) all of these
Correct Answer:
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Q30: Leeches
A)have a fixed number of somites.
B)respire through
Q31: Movement in annelids involves
A)longitudinal muscles only.
B)circular muscles
Q32: The cocoon in the earthworm is produced
Q33: The clam worm gets food by
A)using its
Q34: Current medical uses of annelids involve
A)flatworms.
B)leeches.
C)polychaetes.
D)freshwater oligochaetes.
Q36: The larva of polychaetes is
A)lacking.
B)a pilidium.
C)a trochophore.
D)a
Q37: The feathery arms of fanworms that trap
Q38: The typical nervous system of annelids consists
Q40: Sipunculids
A)are marine dwellers.
B)live in burrows.
C)have a trochophore
Q46: In the earthworm,food is drawn into the
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