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11 Cards in this Set
- Front
- Back
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What are the main characteristics of vertabrate animals?
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At some point in their lives they all have a notochord, hollow nerve chord, pharyngeal pouches, and a tail.
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What is an ectotherm? What does that mean?
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Cold blooded. This animal's body temperature flucuates with the temperature of its environment. Fishes, reptiles, amphibians are this.
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What is an endotherm? What does that mean?
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Warm blooded. This animal's body temp stays constant. Humans are this.
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What are the characteristics of a Jawless fish? Examples?
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Eel-like with smooth, slimy skin, round mouth cartilage, notochord but no backbone. Skull, brain, and eyes. Lamprey eel and hagfish.
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What are the characteristics of a cartilaginous fish? Examples?
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These are fish that never convert cartilage to bone.These have rough skin (denticles) and sink when not swimming. Sharks, skates, and rays.
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What are the characteristics of bony fish? Examples of each group?
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These fish have bones and scales. These have swim bladder to maintain bouyancy. Two groups are ray-finned (pike,trout) and lobefinned(coelacanths) and lungfishes(Lungfish).
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How do fish get oxygen they need?
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All fish breathe through their gills. Some must move to keep oxygen flowing across gills, others (rays) can pump water across gills when still.
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How do fish reproduce?
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Most fish have external reproduction. Female lays egs and male fertilizes. Some use internal reproduction.
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How does the body of a frog change from life in water to life on land? Be specific.
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Tadpole(larva) use tail and gills in water. Then loses tail, grows legs, converts to lungs during metamorphosis.
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How do frogs reproduce?
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External reprduction. Some lay eggs in water, some on land.
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What are the differences between frogs and toads?
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Frogs have slimy skin. Toads have rough, bumpy skin. Toads spend less time in water.
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