marsupials - pouched animals, endoskeleton - skeleton that is inside the body, tetrapod - having two sets of paired limbs, mammary - glands that produce milk, endothermic - animals that maintain their own constant body temperature, monotremes - egg-laying mammals, amniote - eggs with membranes that protect the developing embryo, placenta - temporary organ that nourishes most mammal young before birth, amphibians - can breathe through skin with lungs; three-chambered heart; live mostly on land, reptiles - dry, scaly skin that is waterproof; internal fertilization; three-chambered heart, birds - four-chambered heart; adaptations for flight include hollow bones and feathers; most construct nests and then care for the eggs and hatchlings, mammals - endothermic; produce milk to feed babies; have hair or fur, animals - eukaryotic; cells do not have cell walls; heterotrophs, ectothermic animals - salamander, rattlesnake, manta ray, bats - only flying mammal, amphibian - salamander; poison dart frog, marsupial - kangaroo, reptile - gecko; sea turtle, placental - tiger, vertebrates characteristics - skull and backbone; endoskeleton; hinged jaw; tetrapods, fish characteristics - two-chambered heart; blood is pumped from heart to gill; thousands of offspring produced, three classes of fish - jawless fish, cartilaginous fish; bony fish, amphibian - "double life", live mostly on land; eggs must be laid in water because they have no shells, amphibian characteristics - tetrapods; three-chambered heart; lungs; smooth, moist skin, reptile characteristics - live and reproduce on land; eggs have waterproof shell; dry, scaly skin that is waterproof; three-chambered heart, alligators - Alligators: shorter, wider heads; strongly favor fresh water; found in US and China, crocodiles - more aggressive; found all over the world; live in saltwater, birds - endothermic; adapted to flight; four-chambered heart, mammals - have hair or fur; mammary glands produce milk for babies, three classes of mammals - monotremes, marsupials, placentals,

Vertebrates

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