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9 Cards in this Set
- Front
- Back
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Cyclostomata nutrition |
All living members of the class Cyclostomata are ectoparasites on some fishes |
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Cyclostomata respiration |
They have an elongated body bearing 6-15 pairs of Gill slits for respiration |
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Cyclostomata mouth |
Cyclostomes have a sucking and circular mouth without jaws |
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Cyclostomata Absence |
Their body is devoid of scales and paired fins |
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Cyclostomata vertebral column |
Cranium and vertebral column are cartilaginous |
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Cyclostomata circulation |
Circulation is of closed type |
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Cyclostomata habitat and spawning |
Cyclostomes are marine but migrate for spawning to fresh water. After spawning, within a few days, they die. |
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Cyclostomata larvae |
Their larvae, after metamorphosis, return to the ocean. |
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Cyclostomata examples |
Petromyzon (Lamprey) Myxine (Hagfish) |
