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Home Q & A Board Biology-Related Homework Help General Biology
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bklynbeauty86 bklynbeauty86
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6 years ago
How do ray-finned fish keep from sinking?
 
  a. they are constantly swimming
  b. they dont constantly swim but their fins
  are constantly moving
  c. they have lungs that are always filled with
  air
  d. they have a swim bladder that is filled with
  gas
  e. they have a skeleton that is less dense than
  the surrounding water

Question 2

A tuna is a ___ fish.
 
  a. ray-finned
  b. lobe-finned
  c. cartilaginous
  d. jawless
  e. invertebrate
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jyxynvaeajyxynvaea
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6 years ago
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bklynbeauty86 Author
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#2
6 years ago
Passed my quiz with this!
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#3
6 years ago
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