_______________ is called the "fat innkeeper" because it has many commensals living in its burrow.
A) Bonellia
B) Riftia
C) Lingula
D) Urechis
Fill in the Blank Questions
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Q19: Annelids grow by producing new segments at
Q20: The Errantia
A)belong to the smallest and most
Q21: Leeches
A)are found mainly in fresh water.
B)may be
Q22: Reproduction in the earthworm involves
A)asexual budding.
B)self-fertilization.
C)cross-fertilization between
Q23: The circulatory system in the earthworm
A)is absent.
B)is
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
Q28: Some typical leech characteristics are as follows:
A)anterior
Q29: In the annelids,each internal compartment is lined
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