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Class Osteichthyes

The gills are...

Question

The gills are not covered in while have gills covered by operculum.

A

Echinoderms

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B

Osteichthyes

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C

Chondrichthyes

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D

Platyhelminthes

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Solution

The correct options are
B Osteichthyes
C Chondrichthyes
In cartilaginous fishes, gill slits are separate and without operculum (gill cover). Bony fishes possess gill slits that are covered by an operculum.

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