Chondrichthyes skin is tough with placoid scales, and their teeth are modified placoid scales. They possess powerful jaws.
Chondrichthyes skin is tough with placoid scales, and their teeth are modified placoid scales. They possess powerful jaws.
| Text | The skin of chondichthyes is tough, containing minute placoid scales.Teeth are modified placoid scales which are backwardly directed. Their jaws are very powerful. |
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