Internal naris is present in _____________.

Agnatha

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Chondrichthyes and Osteichthyes

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Choanichthyes

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None of the above

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Solution

The correct option is C Choanichthyes
C. Choanichthyes
EXPLANATION: External nares are two openings, through which air enters the nasal cavity from the outside. Internal nares are the openings from the nasal cavity into the pharynx. In choanichthyes internal nares are present.

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