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Answer to Question #61400 in Other Biology for bbb

Question #61400
7 Which of these is not true of the chordates?
have tightly packed cells
have tubular nerve chords
they have no notochord
have gill slit at some stages

8 A vertbral column replaces the ------------ in vertebrates
notochord
gill slits
tubular nerve chords
flexible rod of tightly packed cells

9 Which of the following is not true of the vertebrates?
possession of endoskeleton
have a well developed sense organs
have backbones
bodies are not bilaterally symmetrical
Expert's answer
7. they have no notochord
8. Notochord
9. bodies are not bilaterally symmetrical

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