Question
Write down four characters of Chondrichthyes. Give two examples.
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Answer
- Marine fishes with completely cartilaginous endoskeleton are called chondrichthyes. They are generally large in size.
- Streamlined body is either laterally compressed or spindle-shaped or dorsoventrally flattened and disc shaped.
- Mouth is ventral in position.
- Skin is tough and covered with minute placoid scales.
Example: Scoliodon (dog fish) and Torpedo (electric ray).
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