Multiple Choice
The swim bladders of bony fishes
A) evolved from lunglike sacs that supplemented the gills in respiration.
B) are used for respiration in most contemporary species.
C) are organs of buoyancy that help them control their depth in the water column.
D) prevented them from existing in a marine environment.
E) Both a and c
Correct Answer:
Verified
Correct Answer:
Verified
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