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Vertebrata Agnatha Pisces - Questions and Answers

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51. Placoid scales are found in
A. Cartilaginous fishes/sharks
B. Bony fishes
C. Lung fishes
D. All the above
Explanation:
52. Which one is a true fish
A. Sea Horse
B. Bombay Duck
C. Salmon
D. All the above
Explanation:
53. In sharks, one of the following is absent
A. Claspers
B. Cartilaginous endoskeleton
C. Placoid scales
D. Air bladder
Explanation:
54. Sharks and rays belong to class
A. Cyclostomata
B. Osteichthyes
C. Amphibia
D. Chondrichthyes
Explanation:
55. Isinglass is employed in
A. Preparation of wines
B. Distillation of wines
C. Preservation of wines
D. Clearing of wines
Explanation:
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