Please enable JavaScript.
Coggle requires JavaScript to display documents.
Mammals (Mammalian Traits (have milk secreting glands tht secrete a…
Mammals
Mammalian Traits
- have milk secreting glands tht secrete a nutritive fluid called milk to nourish the young
- Brain capacity- more capacity for memory, learning, conscious thought
- become distinctive bcs they care for the young
- hair covers at least part of the body. whales have whiskers for sensory function. hair acts an insulative layer to conserve heat
- Dentition is extensive. teeth are divided into incisors, canines, premolars, molars. mammals cut, grind, chew food before swallowing.
- embryo have amniotic sac & extraembryonic membranes
Mammalian Lineages
- monotremes- egg laying mammals
:female-doctor::skin-tone-2: spiny anteater is toothless. the young helpless to fend themselves. so they stay in mother's temporary skin pouch. possses snake like tounge used to lick up insects.
:male-teacher::skin-tone-2: platypus has duck like fleshy bill. tails help to swim. they toothless, metabolic rate low.
- marsupials- pouched animals
:maple_leaf: the yound blind, helpless & hairless embryo. they suckled & finish development in mother's permanent pouch.
:fallen_leaf: Tasmanian devil feed on carcasses. it maintain bush & farm hygiene by cleaning up carcasses.
:four_leaf_clover: Kangaroo stood & hop. carry baby inside pouch for female. the youngster have greater chances of survival
- eutherians- placental animals
:candy: the young are nourished within mother's uterus by placenta. placenta functions in exchange of nutrients & waste. embryo grow faster in womb & fully formed at birth
-
Hominoids- a group ofapes,hominid (humans)
Gibbons & orangutans-tree dwellers,Chimpanzees & gorillas adapted to life on ground.
Hominin evolution
-
:sunflower:human pelvis is shorter,broad-attachment for upright walking
-
-
-
-
-
-
Primates- an order that includes lemurs, tarsiers, monkey, apes & human
primates evolution
:cake: enhanced daytime vision - able to discernshape, movement, colour & light intensity. possess sharp hearing
-
:sushi: power grip & precision grip - have five highly flexible digits. allow for tool making, wrap around object
-
:pizza: brain, behavior, culture- enrichment in learning, symbolic behavior especially language.
Primates suborder
:aerial_tramway: Prosmii - small tree dweller, use eye for night hunting, elongated & pointed face
-
:racing_car: Anthropoids- monkeys,humans, apes. Old & New world monkeys
-
-
-
-