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ecology+enviorment
chapter 1-3
| Question | Answer |
|---|---|
| organism | a living thing |
| habitat | an environment that provides the things a specific organism needs to live, grow, and reproduce |
| biotic factor | a living or once living part of an organisms habitat |
| abiotic factor | a nonliving part of an organisms habitat |
| species | a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce |
| population | all the members of one living in the same area |
| community | all the different populations that live together in a particular area |
| ecosystem | the community of organisms that live in a particular area, along with their non-living area |
| ecology | the study of how organisms interact with each other and their environment |
| birth rate | the number of births per 1,00 individuals for a certain time period |
| death rate | the number of deaths per 1,000 individuals for a certain time period |
| immigration | movement of individuals into a populations area |
| emigration | movement of individuals out of a populations area |
| population density | the number of individuals in an area of specific size |
| limiting factor | an environment factor that causes a population to decrease in size |
| carrying capacity | the largest population that a particular environment can support |
| natural selection | the process by which organisms that are best adapted to their environment are most likely to survive and reproduce |
| adaption | an inherited behavior or physical characteristic that helps an organism survive and reproduce in its environment |
| niche | how an organism makes its living and interacts with the biotic and abiotic factors in its habitat |
| competition | the struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time |
| predation | an interaction in which one organism kills another for food or nutrients |
| predator | the organism that does the killing in a predation interaction |
| prey | an organism that is killed and eaten by another organism in a predation interaction |
| symbiosis | any relationship in which two species live closely together and that benefits at least one of the secies |
| mutualism | a type of symbiosis in which both species benefit from living together |
| commensalism | a type of symbiosis between two species in which one species benefits and the other species is neither helped nor harmed |
| parasitism | a type of symbiosis in which one organism lives with, on, or in a host and harms it. |
| parasite | the organism that benefits by living on,with, or in a host in a parasitism interaction |
| host | an organism that a parasite lives with, in, or on, and provides a source of energy or a suitable environment of the parasite to live |
| succession | the series of predictible changes that occur in a community over time. |
| primary succession | the series of changes that occur in an area where no soil or organisms exist. |
| pioneer species | the first species to populate an area during succession |
| secondary succession | the series of changes that occur in an area where the ecosystem has been disturbed, but where soil and organisms still exist |
Created by:
mia kovalchik