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Question
Which of the following classes doesn't belong to the superclass Agnatha?
Which of the following classes doesn't belong to the superclass Agnatha?
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Solution
The correct options are
A Placodermi
B Chondrictheyes
- Agnatha is a superclass of jawless fish i.e these animals have no jaws.
- They come under the phylum chordata, subphylum vertebrata and includes the Cyclostomes and extinct Ostracoderm species.
- Placodermi is a class of armoured prehistoric fish having plated skin belonging to the superclass Gnathostomata (having jaws).
- Chondrichthyes is a class which contains cartilaginous fishes and belong to the superclass Gnathostomata.
- So the correct answer is 'Placodermi and Chondrichthyes'.
A Placodermi
B Chondrictheyes
- Agnatha is a superclass of jawless fish i.e these animals have no jaws.
- They come under the phylum chordata, subphylum vertebrata and includes the Cyclostomes and extinct Ostracoderm species.
- Placodermi is a class of armoured prehistoric fish having plated skin belonging to the superclass Gnathostomata (having jaws).
- Chondrichthyes is a class which contains cartilaginous fishes and belong to the superclass Gnathostomata.
- So the correct answer is 'Placodermi and Chondrichthyes'.
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