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15 Cards in this Set
- Front
- Back
animal that at some time in its development has a notochord, a nerve cord, and gill slits
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chordate
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cold-blooded animal whose body temperature changes with the temperature of its surrounding environment
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ectotherm
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warm-blooded animal whose body temperature does not change with its surrounding environment
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endotherm
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tough, flexible tissue similar to bone but is softer and less brittle
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cartilage
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period of cold weather inactivity; in amphibians, involves burying themselves in mud or leaves
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hibernation
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period of hot, dry weather inactivity; in amphibians, involves moving to cooler, more humid areas underground
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estivation
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behavioral adaptation of reptiles that allows them to reproduce on land; encloses the embryo within a moist environment protected by a leathery shell and has a yolk that supplies the embryo with food
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amniotic egg
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strong, lightweight feather that gives a bird its shape and coloring and can help the bird steer, attract a mate, and avoid predators
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contour feather
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fluffy feather that traps and keeps air warm against a bird’s body
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down feather
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plant-eating mammal with incisors specialized to cut vegetation and large, flat molars to grind it
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herbivore
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meat-eating animal with sharp canine teeth specialized to rip and tear flesh
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carnivore
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plant-eating and meat-eating animals with incisors specialized to cut vegetables, premolars to chew meat, and molars to grind food
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omnivore
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mammal that lays eggs with tough, leathery shells instead of giving birth to live young
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monotreme
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mammal that gives birth to incompletely developed young that finish developing in their mother’s pouch
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marsupial
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mammal whose young develops inside the female uterus until it is fully formed and ready to be born; has a placenta – a saclike organ – which supplies the embryo with food and oxygen and removes wastes
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placental
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