In a typical ray-finned fish, the swim bladder allows individuals to perform which of the following processes? Option 1 - effectively circulate its blood Option 2 - use its swim bladder as a respiratory organ Option 3 - use its lateral line system Option 4 - remain buoyant
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Step 1: The swim bladder in ray-finned fishes is a modification of the lungs to help maintain buoyancy in water. Show more…
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1. Describe the function of the swim bladder in fish and name the homologous structure found in other vertebrates. (Hint: Think of another gas-filled organ). 2. Identify the respiratory surface (surface over which gas exchange occurs) in the following animals: flatworms (planaria) ________________________________ bony fish ___gills______________________________________ insects ___________________________________________ humans __________________________________________ 3. Which membrane transport process is involved in gas exchange in animals?
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Madhur L.
A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from the airbreathing organ (a simple lung) of an ancestral fish is an example of a. exaptation. b. changes in Hox gene expression. c. paedomorphosis. d. adaptive radiation.
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