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Which one of the following pairs of animals comprise "Jawed fishes"?
(a)Petromyzon and Scoliodon
(b)Clarias and Myxine
(c)Petromyzon and Myxine
(d)Betta and Trygon

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Important Questions on Animal Kingdom
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Which of the following statements are not true about shark?
a. The skin is tough and covered with placoid scales.
b. They possess a swim bladder which regulates buoyancy.
c. The tail of shark is heterocercal.
d. Ampulla of Lorenzini present in the snout of shark serve as thermoreceptor and electroreceptor
e. It has five pairs of gill slits covered by operculum.
