Leeches
A) are found mainly in fresh water.
B) may be ectoparasites or micropredators.
C) are hermaphroditiC.
D) all of these
Correct Answer:
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Q16: The following characteristics are typical of annelids:
A)segmentation,open
Q17: The annelids,molluscs,and arthropods are considered members of
Q18: Errantia differ from other annelids because errantia
Q19: Annelids grow by producing new segments at
Q20: The Errantia
A)belong to the smallest and most
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
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 _.
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