ex of amphibians salamenders, frogs, caecilians phylum for salamenders chordates class for caecilians amphibian How do each of three tetrapod groups of amphibian move on land salamenders walk side to side by bending their bodies frogs: use their hind legs to hop caecilians they are legless and can burrow why do frogs lay eggs in water the frogs eggs need moisture to prevent them from drying out. what is the larval stage of frog called tadpole tadpoles have (gills/ lungs) gills frogs have(lungs/gills) lungs Frogs can be only aquactic or only terrrestrial(T/F) True Which frogs are called toads Toads live on land theey do not live on water. how do amphibians living in damp habitats breath Frogs are amphibians. They can breathe using their lungs* on land, or absorb oxygen through their skins when underwater (this is called cutaneous respiration). Lacking diaphragm muscles, frogs on land may be said to "swallow" air : they inhale air through their nostrils, inflating skin sacs in their throats, then press down with the mouth muscles to force it into the lungs. Amniotic A thin, tough, membranous sac that encloses the embryo or fetus of a mammal, bird, or reptile. It is filled with a fluid in which the embryo is suspended. amniotic egg the embryo is within the amniotic sac which is filled with fliud Reptiles-ex lizards, snakes, turtles, crocodilians, birds, and the extinct dinosaurs which is the most diverse reptile lizards Name two other adaptations that reptiles have for living terrestrially. reptiles have skin that is covered by scales that are water proofed.the tough keratin protein this keeps the body from drying out. Also reptiles cannot breath through their dry skin , they have a rib cage that helps ventilate the lungs inorder to get oxygen through the lungs. Why is ectothermic a more appropriate term then “cold blooded” for non-bird reptiles? Reptiles cannot produce their own body heat even though they can regulate their own body temperature.So as they absorb their heat rather than generate their own ht they are called ectothermic bearded australian outback is an ex of Eco or endothermic ectothermic how does bearded australian outback get its heat in the morning it sits on a warm rock enjoying the sun. if it gets too hot it moves to a shaded spot. Deinonychus are (amphibians/reptiles) who are (frogs/dinosaurs) reptiles, dinosaurs Which reptiles, living and extinct, are (or were) endothermic, and what does endothermic mean? Deinonychus, other small dinosaurs and birds are endothermic. It uses heat to generated by metabolism to keep itself warm. Briefly describe five features of birds that give them the ability to fly. reduced wght, edothermic with high metabolism, efficient respiratory and circulatory system, good eyesight, and feathered wings that are shaped like air foils Who has more efficient lungs(birds or mammals) birds 2 lineages of amniotes reptiles and mammals 3 main grps of living mammals monotremes, eutharians, marsupials placental mammals are called Eutherians marsupials arose from eutharians eutherians are placental mammals. mammalian hallmark features hair and mammary glands What is the function of the hair in mammals? helps to insulate the body and warm body temperature Which of these are the living example of a Monotreme mammal? (duck billed platypus, echidnas( spiny anteater), kangaroo, monkeys) duck billed platypus, spiny anteater which is the only group of egg laying mammals monotremes From where do the young ones emerge in the group of monotremes eggs Marsupials are egg laying, placental , pouched mammals ? pouched mammals What are the main reproductive characteristics of marsupials marsupials are pouched mammals whose offspringsare embryonic. They will complete their development in the pouch while attached to the nipple. what is the pouch in marsupials called marsupium Why are Marsupials so diverse in Australia? After the continental drift all marsupials got concentrated in Australia. So they took over all the ecological niches in that continent and thus got diversified How is a Eutherian different from a Marsupial, in terms of reproduction? Eutherians are placental mammals. the young one completes its embryonic development in the uterus that is attached to the placenta. ex of eutherians zebra, rodents, elephants, rabbits, dogs, whales, bats, humans and cows. what order do humans belong to primates lemurs, tarseirs, monkeys apes are primates we belong to the chimpanzee / ape/ monkey group? ape Which primates would be considered Anthropoids? monkeys and apes Which primates are considered Hominoids, (Apes) humans How many species of extinct hominids have we found fossils from? 500 740 1500 1200 1200