Term
| A vertebrate is a chordate that has... |
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Definition
| a strong supporting structure known as the vertebral column, or back bone. |
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Term
Main characteristics of:
Fish
Amphibians
Reptiles
Birds
Mammals |
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Definition
Fish: Aquatic vertebrates that have paired fins, scales, & gills.
Reptiles: Vertebrate that has dry, scaly skin, lungs, terrestrial eggs with several membranes.
Amphibians: Vertebrate that generally lives in water as larva and on land as an adult, breathes with lungs (in adulthood), has moist skin, lacks scales & claws.
Birds: Reptilelike animals that maintain a constant body temp. They have outer layer of feathers, two legs covered in scales, and front limbs modified into wings.
Mammals:Have hair, can nourish young with milk, breathe air, have 4 chambered hearts, and are endotherms (generate body heat internally) |
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Term
How does a fish respire?
-How does water move through the gills? |
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Definition
They exchange gases using gills located on either side of the pharynx.
-They pull in oxygen-rich water in their mouth, pumping it over the gill filaments, and then pushing oxygen-poor water out through openings in the sides of the pharynx. |
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Term
| What is the purpose of a swim bladder in a bony fish? |
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Definition
| It is a gas filled organ that adjusts their buoyancy so they don't sink. |
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Term
| How does the word "amphibian" describe where frogs live? |
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Definition
"Amphibian":Double Life
On Land & In Water |
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Term
| Describe the metamorphosis of a frog: |
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Definition
Adult frog.
^Frog lays eggs in the water and undergo external fertilization.
Eggs hatch into tadpoles.
Tadpoles grow limbs, lose their tails, and become meat eaters.
They begin to become terrestrial/land-dwelling adults.
Repeat. |
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Term
| How does a frog breath during its young and adult stages? |
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Definition
In most larval amphibians, gas exchange occurs through the skin as well as gills.
Lungs replace gills when an amphibian becomes an adult. |
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Term
| What does the terms "Aquatic" & "Terrestrial" mean? |
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Definition
Aquatic is in the water
Terrestrial is on land |
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Term
| Ectotherm literally means "outside temperature". Which vertebrates are ectotherms? |
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Definition
Turtles, snakes, other modern reptiles.
Ectotherm : rely on environment/behavior to help control body temperature. |
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Term
| How might an ectotherm warm its body? |
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Definition
| It could lay out in the sun or stays under water at night. |
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Term
| How does a reptile breathe? |
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Definition
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Term
| You find a small egg. You are not sure if it belongs to a frog or a small turtle. How could you decide? |
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Definition
Frogs lay their eggs in water, and have a thick jelly to attach the eggs to something.
Small turtles lay their eggs on land. |
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Term
| Describe the difference between a snakes egg and an eagle's egg |
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Definition
| They're similar, but birds eggs have harder outer shells. |
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Term
| How do some mammals cool down? |
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Definition
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Term
| What is the function of a placenta? |
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Definition
| it is an organ in placental mammals that exchanges nutrients, oxygen, carbon dioxide, and wastes |
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Term
| Some primates have an opposable thumb: What does that allow them to do? |
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Definition
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Term
| Hominids, including modern man, have bipedal locomotion. What does that mean? |
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Definition
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Term
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Definition
| Animal that has, for atleast one stage of its life, a dorsal, hollow nerve cord; a notochord, pharyngeal pouches, and a tail that extends beyond the anus. |
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