Synchronous spawning by enteropneusts suggests the presence of
A) asexual reproduction.
B) epitoky.
C) parthenogenesis.
D) protandry.
E) pheromones.
Correct Answer:
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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
Q50: Nutritionally,pterobranchs are
A)filter feeders.
B)parasitic.
C)mutualistic.
D)commensalists
E)predators.
Q51: Exchange of respiratory gases in enteropneusts is
Q52: Coiled masses of fecal material called _
Q53: Sea daisies were formerly assigned to a
Q54: Enteropneusta and Pterobranchia are classes of animals
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