What are the features of class cyclostomata ?
Answer (1)
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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