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Question
Give one example each for an animal possessing placoid scales and that with cycloid scales.
Short/Brief Note
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Solution
Placoid scales are tiny tough scales that cover the skin. Examples are Trygon and Pritis.
Cycloid scales are characterized by having a smooth outer margin. Examples are Catla and Clarias.
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Subphylum -Vertebrata/Craniata > Class: Chondrichthyes
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