Some typical leech characteristics are as follows:
A) anterior and posterior suckers,a clitellum,no setae.
B) setae,clitellum,and separate sexes.
C) parapodia,no setae,and hermaphroditism.
D) anterior and posterior suckers,separate sexes,and setae.
Correct Answer:
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Q23: The circulatory system in the earthworm
A)is absent.
B)is
Q24: _ is called the "fat innkeeper" because
Q25: Echiurans
A)live in fresh water.
B)have a proboscis used
Q26: Most annelids possess tiny bristles called _.
Q27: The paired appendages used for locomotion in
Q29: In the annelids,each internal compartment is lined
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
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