In Many Sharks,extra Buoyancy Is Provided by The

Q23: The caudal fin of sharks is located

Q24: The counter-current system of flow is involved

Q25: Most marine fishes are:<br>A)Live-bearers.<br>B)Ovoviviparous.<br>C)Viviparous.<br>D)Oviparous.<br>E)Catadromous.

Q26: The purpose of the lateral line in

Q29: Ovoviviparous fishes:<br>A)Release eggs,which are then fertilized in

Q30: The gill rakers are involved in which

Q31: Chemical digestion in fishes usually begins in

Q32: Broadcast spawning in fish refers to:<br>A)Internal fertilization.<br>B)External

Q33: The nictitating membrane of sharks:<br>A)Produces sound.<br>B)Detects chemicals

Q40: Which of these is an example of