Which of the following animals belongs to class Cyclostomata?
Petromyzon (lamprey) is a jawless fish belonging to class Cyclostomata.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
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Which of the following is a distinguishing feature of class Cyclostomata?
Members of class Cyclostomata, such as lampreys and hagfish, lack jaws and have a circular, sucking mouth.
Ref: NCERT Class 11 Biology Chapter 4: Animal Kingdom Vertebrata - Cyclostomata and Pisces
