QUESTION 4 What adaptation do members of the clade Chondrichthyes have to meet t

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QUESTION 4 What adaptation do members of the clade Chondrichthyes have to meet the buoyancy challenge to aquatic life? OLarge lobes of liver that produce oils O Regulation of ion balance through salt glands O Movement of air into and out of lungs O Movement of air into and out of gas bladder QUESTION S Which of the following statements about fish sensation in aquatic environments is correct? O Ampullae of Lorenzini are used to detect odors at very ow concentrations OThe vestibulo-ocular refilex allows fish to detect hidden prey 0 The lateral line system is used to detect water currents and prey O olfactory lamellae are used to detect sound vibrations.

Explanation / Answer

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Answer 1: Choice 1 (Cartilagenous fishes such as sharks have large livers duly filled with oils which help in maintaining their buoyancy as well as help in swimming)

Answer 2: Choice 3 (the lateral swim line on the body of the fishes helps in identifying the directions and proximity of other organisms, including prey)

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