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class reptilia has tough, __ layered skin protects from dessication |
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| layered skin protects from dessication |
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| shelled eggs developed without water-turtles which returned to water, must come to shore ot lay eggs |
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| in class reptilia, __ that eggs develop determines the sex of the offspring in turles, alligators |
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| in class reptilia temperatures that eggs develop at determines the _- of the offspring in __ and __ |
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sex turtles and alligators |
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| two methods of feeding in reptilia |
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| __ either drips down back of fangs or is injected by hollow fangs like a needle |
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| contains nuerotoxins (paralyze) ensymes to pop blood cells, start digesting muscles |
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| compress with powerful muscles:each time prey exhales, snake squeezes harder until prey's lungs are empty and dies |
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| vipers, cobras and rattlers use which method of feedin |
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| boas and pythons use which method of feeding |
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snakes sensory reception: |
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Definition
forked tongue heat sensing pits |
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| used in smell:each branch fits onto a nostil opening in roof of mouth |
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| having _ allows snakes to track animals by recognizing if more smell is coming from left or right |
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| which hae heat sensing pits |
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| can detect temperature dofference of one thousand of a degree |
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Definition
| heat sensing pits of snakes |
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| snakes use this to hunt prey in darkness |
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heat sensing pits in __ indentations along lips |
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| heat sensing pits in __ pits between nostrils and eyes |
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| __ shedding skin depends on growth |
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| __whole body layer covering (outerlayer of scales) turns inside out |
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class aves birds-adaptation for flight: scales replaced with__ forelimbs became__ hollow bones became _attached to __ on the sterrum bone _ to maintain high level of muscle activity -air constantly moved across lungs-more eff. respitation __ one ovary most without urinary bladder, gonads reduced in size |
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Definition
feathers wings higher skeleton for flight large breast muscles to keel warm blooded (exothermic) air sacs reduced organs |
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| for class aves-birds, __acrs as an air foil to provide lift during flight |
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| in class aves-birds: feathers and beaks made of (same as protein as reptiles scales) |
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| keratin (same as protein as repiles scales) |
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| air sacs empty, lung fills |
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origin of __ A). fossil dinosaur with primitive feathers on back B). flightless dinasour but with true feathers |
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| __ birds evolved from dinasour lineage |
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| is class mamamlia exo or endo |
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class mammalia is __ requires high metabolism, eff. circulatation and respiration |
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| endothermic(warm blooded) |
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| in class mammalia _ is made of keratin and provides insulation |
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| in class mammalia hair is made of _ provides insulation |
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| in class mammailia__ are milk for nurishin young |
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| in class mammalia __ learning and complex social behavior |
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| in class __ differntiation of __ for various purposes (molars, canines, etc) |
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| evolution of the __ reptile lower jaw is made of serveral fused bones |
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| __ lower jaw is just one bone (stronger) |
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| 2 reptile jaw bones adapted for sue in __ |
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monotremes marsupials placental mammals (eutherians) |
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-egg laying, platypus eggs is reptilian produce mile for babies but lack nipples |
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no placenta kangaroo, opossum tiny embryo crawls out of womb into pouch, completes development while nursing |
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| placenta (layer of membranes) protects embryo from mother's immune system, allows complete internal development |
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| placental mammals (eutherians) |
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| platypus and echidna are examples of |
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| __ lineages of eutherian mammals |
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4 lineages of eutherian mammals: |
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1 origin of flight 3 independent origins of aquatic mammals |
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