bipedalism & homo habilis

which model says that the increasing brain size and tool usage led to bipedalism, for free hands while walking (carrying tools, defense)?

tool use model

which model says the bipedalism allows hominins to stand and see over savanna to spot predators?

predator avoidance model

which model says that upright posture reduces amount of sunlight during hot days?

temperature regulation model

which model says that free hands allow individuals to transport food and helps energy efficiceny?

food acquisition model

what is the issue with the Tool Use Model?

bipedalism arose before tool use

what is the issue with the Predator Avoidance Model?

predators can se you too, no need for habitual bipedalism

what is the issue with the Temperature Regulation Model?

other animals in the savannah aren’t bipedal

what is the issue with the Food Acquisition Model?

apes generally stand and eat at the source, less efficient than knuckle walking

which bipeds lived in the woodlands, grasslands, and near lakes in 7-6 mya?

sahelanthropus

which bipeds lived in the dry evergreen forests 6.5-7 mya?

orrorin

which bipeds were forest dwelling and preferred bushy habitats?

ardipithecus

what hypothesis suggests bipedalism arose to increase efficiency of standing while feed in trees?

bipedal feeding hypothesis

likely evolved from australopithecine species, relatively large brain size (high degree intelligence), reduction in face and teeth size, and increased reliance are characteristics of . . .

genus homo

“Handy Man”, earliest species of genus homo, east africa, rounded skull, and first association with tools are characteristics of …

homo habilis

less prognathic, large front teeth, increased gripping abilities are physical characteristics of …

homo habilis

homo habilis used choppers, scapers, and pounders. This type of tool is ___

oldowan

scavengers/gatherers, group coordination, and division of labor are examples of

culture behaviors of homo habilis

homo habilis had ___ where food was brought, processed, and distributed.

camp sites and home bases

homo habilis have a ___ sized brain compared to modern humans

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