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The fishes that belong to class Chondrichthyes have
The fishes that belong to class Chondrichthyes have
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Solution
The correct option is D teeth
Sharks and rays are examples of fishes included in the class Chondrichthyes. They have teeth which are modified placoid scales. They do not have an air bladder. Due to the absence of an air bladder, they have to constantly swim in order to prevent sinking. Operculum, covering of gills is absent in Chondrichthyes. Members of Chondrichthyes have a cartilaginous endoskeleton.
Sharks and rays are examples of fishes included in the class Chondrichthyes. They have teeth which are modified placoid scales. They do not have an air bladder. Due to the absence of an air bladder, they have to constantly swim in order to prevent sinking. Operculum, covering of gills is absent in Chondrichthyes. Members of Chondrichthyes have a cartilaginous endoskeleton.
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