Swim bladders ________.
A)contain the gills
B)are required for fish to exchange gases with the surrounding water
C)are present in both bony and cartilaginous fishes
D)help bony fish maintain buoyancy

Question

Quizplus · Accepted Answer

Swim bladders are present in bony fish and help them maintain buoyancy by controlling their overall density in the water. They do not contain the gills and are not required for gas exchange in fish. Swim bladders are not present in cartilaginous fishes such as sharks and rays.

Swim Bladders ________