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    What are the features of class cyclostomata ?
    Pratyay Islam 1st Apr, 2020

    Hello ,

    Features of class cyclostomata :

    • The cyclostomes are jawless fishes.
    • They have suctorial tongue .
    • Endoskeleton is cartilaginous
    • Notochord is persistent throughout life
    • Elongated body bearing 6-15 pairs of gill slits for respiration
    • Heart is 2-chambered
    • Ectoparasites
    • External fertilization
    • Ammocoetes larvae may be seen
    • Example : Petromyzon and Myxine

    Hope this helps


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