Organisms that retain the larval form of their evolutionary ancestors when they are sexually mature are called
A) Larviparous.
B) Paedomorphic.
C) Nymphogenic.
D) Precocial.
Correct Answer:
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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
Q12: One example of why a cladist is
Q13: Appendicularians
A)are sexually mature individuals that have retained
Q15: A dorsal tubular nerve cord is
A)another name
Q16: The name Urochordata means literally
A)"tail chordates."
B)"head chordates."
C)"kidney
Q17: The phylum Urochordata includes the classes
A)Ascidiacea,Cephalaspidomorphi,and Myxini.
B)Appendicularia,Cephalochordacea,and
Q18: The perforated pharynx of chordates first evolved
Q19: A notochord is most correctly defined as
A)a
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