Give one example each for an animal possessing placoid scales and that with cycloid scales.
(N/A) $\rightarrow$ Placoid scales are characteristic of cartilaginous fishes (Chondrichthyes),for example,$Scoliodon$ (Dogfish).
$\rightarrow$ Cycloid scales are characteristic of bony fishes (Osteichthyes),for example,$Labeo$ $rohita$ (Rohu).
$\rightarrow$ Cycloid scales are characteristic of bony fishes (Osteichthyes),for example,$Labeo$ $rohita$ (Rohu).
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