Term
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Definition
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Term
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Definition
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Term
| actinopterygii / osterichthyes |
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Definition
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Term
Which of the following is not true of agnatha?
A. torpedo shaped
B. skeleton of cartilage
C. notochord lost in development
D. no lateral line system
E. mostly predators |
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Definition
D.
they are cylindrical, have a poorly developed skeleton, have a notochord, are ectoparasites and scavengers |
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Term
| Which of the extant fish have jaws? |
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Definition
| sharks/ rays (chondrichthes) and ray finned/ bony fish (actinopterygii) |
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Term
Which of the following is not true of the Agnathans (lampreys and hagfish)?
A. Anterior mouth
B. poorly developed skeleton
C. no buoyancy structure
D. have gills in 6-14 pairs of pouches
E. have placoid scales |
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Definition
| E. chondrichthyes have placoid scales |
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Term
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Definition
| in chondrichthyes, scales like teeth, pointed facing the back |
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Term
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Definition
| in actinopterygii, shingle like scales that are flat and overlap, grow in seasonality patterns |
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Term
Which of the following is not true of the chondricthyes (sharks & rays)?
A. jaws are present
B. placoid scales
C. skeleton of bone
D. liver used for buoyancy
E. ventral mouth |
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Definition
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Term
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Definition
| solid structure in vertebrae, where notochord used to be |
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Term
Which of the following is true of Chondrichthyes (sharks & rays)?
A. anterior mouth
B. swim bladder present
C. smooth skin
D. laterally compressed body
E. present lateral line system |
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Definition
E.
have a ventral mouth, no swim bladder but liver used, placoid scales, torpedo shaped or vertically compressed body |
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Term
Which of the following is not true of the actinopterygii (ray finned-bony fish)?
A. have dermal denticles
B. have 6-14 pairs of gill pouches
C. have an anterior mouth
D. have a swim bladder
E. may be herbivores, carnivores or scavengers |
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Definition
| B. have one pair of gills with an operculum |
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Term
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Definition
| allows fish to detect vibrations in the water- sensory system |
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Term
Which of the following is true of the actinopterygii (ray finned, bony fish)?
A. lack a lateral line system
B. cylindrical body
C. 5-7 pairs of gill slits
D. notochord lost in development
E. use the liver for buoyancy |
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Definition
D.
have a lateral line system, torpedo shaped often laterally compressed body, one pair of gill slits with operculum, use swim bladder for buoyancy |
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Term
| vertebrates that are ectoparasites |
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Definition
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Term
| uses of cartilaginous fish? |
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Definition
| research on eyes (does UV light cause cataracts?) free radicals- use antioxidizing agents, they don't get cancer, used for dietary supplements |
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Term
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Definition
| anterior gill arches/ anterior gill bars |
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