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41 Cards in this Set

  • Front
  • Back
6 characteristics of true animals
-multi celled
-sexual reproductive cycle and/or asexual
-embryonic stage of developement during their lifecycle
5 parameters to classify invertibres
-body cavity
2 kinds of symetry
definition of cephalozation
concentration of pre-brain cells
definition of gut
digestive system
2 kinds of guts
definition of body cavity
space between gut and outside wall of body
2 types of body cavities
-false/suto coelum
definition of coelum
does not have paratenilum
definition of false/suto coelum
has paratenilum
2 types of segmentation
-similar segments (analids)
-not similar segments (insects)
characteristic of sponges
does not have tissue organization
characteristic of flat worms
extremely parasitic and can cause a lot of diseases in humans
characteristic of round worms
can cause a lot of diseases in humans
definition of rotofers
live in water and can be found on mosses
2 stages of cnedarians
-polyp stage
-medusa stage
characteristic of cnedarians
specialized cell called a nomatocyst
definition of nomatocyst
specialized cell that has the ability to shoot out a barbed hook that can paralyze potental prey
2 characteristics of rotofers
-most always females
-do not split transversely
5 reasons why arthopods are the most successful organisms
-greatest number of species
-produce greatest number of offspring
-occupy the most habitats
-defend against all threats and competition
-they can exploit the most kinds and amounts of food
6 adaptations of arthopods to ensure success
-hardened exoskeleton
-jointed appendages
-fused and modified segments
-specialized respertory structures
-specialized sensory structures
-division of labor
characteristic of achinoderms
spiny skin
2 types of cordates
4 characteristics of the first cordates (invertibres)
-had a notocord: a folding of tissue that acted as an early backbone
-had a nervecord: acted as an early spinalcord under the notocord
-had slits in their side: acted as early gils
-had a tail
4 trends of the second cordates (vertibres)
-notocord formed spinal column
-after jaws evolved, the nerve cord formed spinal cord with brain at one end
-the slits evolved into gils for speed
-developed paired fins for stability and manuverablity
8 major catagories of vertibres
-plakaderms: armored fish
-jawless fish
-cartoagulus fish
-boney fish
2 groups of the boney fish that formed amphibians
-lobed finned fish
-lung fish
characteristic of amphibians
very thin skin so 90% of resperation occured through skin
problem with amphibians
they were tied to the water (both for skin and fertilization)
4 innovations of reptiles
-dry scally skin
-internal fertilization
-amniot eggs
-very efficent kidneys
2 characteristics of birds
-hollow bones
2 types of feathers
-feathers for flight (stiff)
-feathers for insulation (soft)
3 groups of mammels
definition of eferians
eventually evolved into primates (anthropoids)
definition of anthropoids
first primate species that evolved into apes, chimps, monkeys, arangs
main reason that homonoids evolved into homonids
changes in the environment (cooler, lost the forests, grassy plains)
5 trends of success in homonids
-became less reliant on smell and more reliant daytime vision
-freeing of hands (made available)
-refined hand movements (power and precision grip)
-teeth became less specialized
-evolution of the brain, behavior, and culture
2 theories of how homonids moved out of africa
-multi regional theory
-african emergance theory
primary method used to determine a mate with humans
sexual selection
definition of the multi regional theory
homo erectus left africa and settled in europe and asia. from there they evolved into homo sapians; thus forming the seperate races
definition of the african emergance theory
homo sapians left africa and settled throughout europe and asia and developed