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Which one of the following pairs of animals comprise "Jawed fishes"?

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Important Questions on Animal Kingdom

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Which of the following pairs is correctly matched?
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Which of the following are referred as non-vertebrate chordates?
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Members of which group are not deuterostomes?
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Which of the following is incorrect match w.r.t. the animals, its characteristics and taxon?
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All the following statements are correct about Petromyzon, except
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In Torpedo, electric organs are present as modified musculature
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Poikilothermous animals having single occipital condyle will belong to
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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.