A dorsal tubular nerve cord is
A) another name for the notochord.
B) a strip of cartilage that forms a back and tail.
C) primitive tissue that forms bone vertebrae.
D) an early nerve cord that enlarges at one end to form the brain and also extends through vertebrae.
E) None of the choices are correct.
Correct Answer:
Verified
Q2: Reproduction in sea squirts is
A)asexual,with new individuals
Q6: One example of why a cladist is
Q7: The difference(s)between the traditional and cladistic classification
Q8: Although several invertebrate groups have been proposed
Q9: The extant group likely to be the
Q10: Organisms that retain the larval form of
Q11: All chordates have
A)a single,dorsal,tubular,nerve cord.
B)a ventral heart.
C)pharyngeal
Q17: The phylum Urochordata includes the classes
A)Ascidiacea,Cephalaspidomorphi,and Myxini.
B)Appendicularia,Cephalochordacea,and
Q19: A notochord is most correctly defined as
A)a
Q20: Salps in the class Thalacea
A)are barrel-shaped open-ocean
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