The ciliated groove that extends longitudinally along the midventral aspect of the pharynx in cephalochordates is the
A) atrium.
B) midgut cecum.
C) cirrus.
D) endostyle.
E) myotome.
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Q2: In chordates,_ are a series of openings
Q3: Root-like extensions of the tunic called _
Q4: When we say "my heart was in
Q5: The endostyle of invertebrate chordates may have
Q6: Members of the subphylum Cephalochordata are called
A)lancelets.
B)tunicates.
C)ammocoetes.
D)salps.
E)dolioids.
Q7: Terrestrial vertebrates made their appearance approximately 400
Q8: In the vertebrates,the notochord
A)is present dorsal to
Q9: Unlike the classic ascidian sea squirts,some urochordates,such
Q10: The tunic of tunicates is composed of
Q11: These animals are commonly used in introductory
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