The circulatory system of enteropneusts sends blood anteriorly into a series of sinuses called the __________,that may filter excretory wastes.
A) nephridium
B) flame bulb
C) renette
D) glomerulus
E) renal corpuscle
Correct Answer:
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Q38: Sea cucumbers belong to the echinoderm class
A)Holothuroidea.
B)Crinoidea.
C)Asteroidea.
D)Ophiuroidea.
E)Concentricycloidea.
Q39: Sea urchins and sand dollars belong to
Q40: The primary circulatory medium in echinoids is
A)blood.
B)hemal
Q41: The nervous system of enteropneusts is _
Q42: The common name acorn worm is derived
Q44: The ciliated larva of an acorn worm
Q45: The water vascular system of echinoderms carries
Q46: Ambulacrarians and chordates are united into the
Q47: Echinoderms and hemichordates are more closely related
Q48: Enteropneusta are wormlike as adults and pterobranchia
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