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Home Q & A Board Biology-Related Homework Help General Biology
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vicmillz vicmillz
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6 years ago
Placoderms were among the first fishes to display
  a. jaws.
  b. gill openings.
  c. cartilaginous skeletons.
  d. jaws and gill openings.
  e. jaws, gill openings, and cartilaginous skeletons.

Question 2

All amphibians, reptiles, birds, and mammals alive
  today
  a. have jaws.
  b. are chordates.
  c. are vertebrates.
  d. are craniates.
  e. are craniate, vertebrate chordates with jaws.
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transfertransfer
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6 years ago
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vicmillz Author
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#2
6 years ago
Upwards Arrow All were right, you're seriously the best
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