Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chapter 5
| Term | Definition |
|---|---|
| Evolution | Change over time |
| Gene | sequence of DNA that codes for a particular trait |
| Mutations | Changes in DNA |
| genetic drift | Biological evolution that occurs by chance |
| Natural selection | the process by which traits that improve an organisms chances for survival and reproductions are passed on more frequently to future generations than those that do not |
| Fitness | describes how reproductivly successful an organism is in its environment |
| adaptation | heritable trait that increases an individuals fitness |
| artificial selection | the process of selection conducted under human direction |
| specaition | the process by which new species are generated |
| Extinction | A species that's no longer existant |
| niche | its use of resources and its functional role in a community |
| Tolerance | the ability to survive and reproduce under changing environmental conditions |
| resource partitioning | the species partition or divide the resources they use in common by specializing in different ways |
| Predation | the process by which an individual of one species a predator,hunts,captures,kills, |
| coevolution | the process by which two species evolve in response to change into each other |
| Parasitism | a relashion ship in which one organism the parasite depends on another the host for nourishment or some other benefit |
| symbiosis | a long lasting and physically close relashionship in which at least one organisms benifit |
| herbivory | interaction in which an animal feeds on a plant |
| mutualism | relationship in which two or more species benifit |
| Commenasilm | describes a relashionship in which one species benefits and the other is unnaffected |
| primary producer | capture energy from the sun or from chemicals and store it in the bonds of Suger making energy available to the rest of the community |
| Photosynthesis | the process by which primary producers use sunlight to convert carbon dioxide and water into sugars releasing oxygen along the way. |
| chemosynthesis | convert carbon dioxide and water into sugars |
| consumers | Organisms that rely on other organisms for energy and nutritions are called heterotrophs or consumers |
| Cellular resperation | the process by which organisms use oxygen to release the chemical energy of sugars such as glucose releasing carbon dioxide and water as a byproduct |
| herbivor | Most primary producers such as deer and grasshoppers, eat plants |
| Carnivors | Organisms that kill other animals to eat them |
| omnivors | Eat both plants and animals |
| Detrivors | such as millipedes and soil insects consume detruis, non living organic matter including leaf litter waste produce and the dead bodies of other cummunity members |
| Decomposers | such as fungi and bacteria break down non living matter into simpler parts that can then be taken up and reused by primary producers |
| trophic level | its rank in a feeding hierarchy |
| biomass | the total amount of living tissue it contains |
| food chain | a linear seriase of feeding relashion ships |
| food web | a visual map of feeding relashionships and energy flow showing the many paths by which energy and nutrients pass among organisms as they con sume on another |
| keystone species | species that has strong or wide reaching impact on a community |
| succession | when this occurs a community experiences a somewhat predictable series of changes over time that ecoligist |
| primary succession | a disturbance is so severe that no vegetation or soil life remains |
| pioneer species | species that colonizes the newly exposed land |
| Secondary succession | unlike primary succession, begins when a disturbance such as a fire, logging, or farming dramatically alters am existing community but does not destroy all living things or all organic matter in soil |
| invassive species | nonnative organisms that spreads wildly in a community |
Created by:
Jowell.D