Shark characteristics include
having internal fertilization.
having isosmotic blood (compared to that of marine water)due to high concentrations of urea and trimethylamine oxide.
having teeth of modified placoid scales.
being able to detect bioelectric fields.
__
Having a swim bladded to control buoyancy
Correct Answer:
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Q2: The ovoviviparous sharks are those that
A)lay eggs
Q4: In North America,knowledge of the biology of
Q5: The large spiracles on the top of
Q6: Unlike other vertebrates,the body fluids of hagfishes
Q7: The Teleostomi fishes consist of what three
Q8: Sharks have _ scales.
A)placoid
B)ctenoid
C)cycloid
D)ganoid
E)polyploid
Q8: The most diverse fish group is the
A)
Q9: The lateral-line of a shark is used
Q13: The cartilaginous fishes do NOT include
A)skates.
B)rays.
C)sharks.
D)eels.
E)All of
Q15: Shark reproduction and development involves
A)clearing a bottom
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