The central definition of a monophyletic group focuses on:
A) Do we have evidence of transitional fossils in the geological record?
B) Do we have the majority of species described in each higher taxon?
C) Are all of the species described actually real species?
D) Do all higher taxa contain all known descendants of their single common ancestor?
E) Do all of the taxa fit into the seven ranks of the Linnaean taxonomic hierarchy?
Correct Answer:
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Q1: Cephalochordates
A)are small fish-like,freshwater animals.
B)have a notochord only
Q2: Reproduction in sea squirts is
A)asexual,with new individuals
Q3: The urochordates are
A)called tunicates.
B)marine animals.
C)sessile as adults,but
Q4: Chordates typically have
A)a notochord.
B)radial cleavage.
C)the anus derived
Q6: Adult ascidian tunicates have
A)a notochord.
B)pharyngeal slits.
C)a dorsal
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: Modification of the pharyngeal slits for first
Q11: All chordates have
A)a single,dorsal,tubular,nerve cord.
B)a ventral heart.
C)pharyngeal
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