Superphylum Ambulacraria contains two deuterostome phyla: Echinodermata and ____________.
Correct Answer:
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Q41: Hemichordates were not recognized until the 1800s
Q43: The grooves that run along the oral
Q44: Hemichordates show relationships to
A)arrow-worms.
B)arthropods and annelids.
C)molluscs and
Q46: A calcareous sieve leading to the water
Q47: The nervous system of an enteropneust hemichordate
Q48: The designation of hemichordates as primitive chordates
Q52: A system of unknown function consisting of
Q56: The hemichordate "notochord" is
A) the feature proposed
Q57: Chaetognaths are also known as _ _.
Q58: On the inner end of each tube
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