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9 Cards in this Set
- Front
- Back
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Birds.
Amniotic eggs & scales on legs like reptiles. |
Class Aves
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Link between reptiles & birds.
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Archaeopteryx
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Hollow bones, strong honeycomb structure.
ToothlessL gizzard helps with physical digestion. High metabolic rate/large energy demand- 4-chambered heart. Acute senses, especially vision. Large brains. Wings & feathers: strong, flexible, light. Enhanced sternum (breastbone) for wing muscle attachment. |
Bird anatomy enhances flight
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Frigate bird
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2m wingspand & entire skeleton weighs only 113g!
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Ratites
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Flightless birds, don’t have keel.
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Class Mammalia
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Hair, mammary glands, teeth differentiation.
Endothermic, active metabolism. Surface-volume ratios important to metabolic rate. |
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Monotremes
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Egglaying mammals
Spiny Echidna Platypus |
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Marsupials
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Mammals with pouch.
Koala. Opossums. |
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Eutherians
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Placental mammals
Dogs, whales. |
