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Marine Test 11-6-14
Test on Module 6
| Question | Answer |
|---|---|
| Characteristics of class agnatha | Jawless, no paired fins or scales, cartilage, no bones, include things like hagfishes and lampreys |
| Why are Lampreys not basic and simple like some scientists suggest? | they are anadromous and have the ability to change environments |
| Know about a rays body design and how it fits their lifestyle | their bodies are flat and they are demersal which means they live on the bottom of the ocean, eyes are located on the top of their heads so they can see prey from the bottom of the ocean floor |
| ostioeichyes | class composed of the bony fishes |
| osteoblasts and osteocytes | bone-forming cells; would not find these in a cartilaginous fish |
| swim bladder | regulates where they are in the water, put gas in and out helps them move up and down |
| camouflage | can't be seen |
| disguise | look like something other than yourself |
| advertisement | standing out |
| Spiral intestine, why it't like this and what is the advantage? | internally twisted to increase the surface area of the intestine, to increase nutrient absorption. |
| Blood flow through gills of fishes | counter current circulation |
| what the lateral line does? | sensory organ to help fish feel water currents and sense fish around them |
| Ampullae Lorenzini | organ to help detect electrical impulses |
| Oviparous | A type of development in which eggs are hatched outside a female’s body |
| Ovoviviparous | A type of development in which eggs are hatched inside a female’s body |
| Viviparous | A type of development in which the young obtain their nutrients directly from the mother and are birthed live |
| anadromous | life cycle in which creatures are hatched in fresh water, migrate to salt water when adults, and return to fresh water to reproduce |
| catadromous | fishes that migrate from fresh water to reproduce in the ocean |
| 3 things that distinguish a bony fish vs a cartilaginous fish | skeletons of the two, buoyancy (sharks 'cartilaginous fish' don't have a swim bladder), and their eyelids (bony fish don't have any, sharks have a special kind) |
| label external features of a shark | |
| what is the operculum | covers the gills and allows water to go through one way |
Created by:
a.allsup
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