ecology
Order by
20 terms
Terms | Definitions |
|---|---|
 ecology | the branch of biology that deals with the relations of organisms to one another and to their physical surroundings |
| biosphere | the regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms |
| biotic factor | living things in their ecological relations |
| abiotic factor | physical rather than biological; not derived from living organisms |
| population | all the inhabitants of a particular town, area, or country |
| biological community | all the interacting populations of different species that live in the same geographical location at the same time |
| ecosystem | a biological community of interacting organisms and their environment |
| biome | a large naturally occurring community of flora and fauna occupying a major habitat |
| habitat | the natural home or environment of an animal, plant, or other organism |
| niche | role, or position, of an organism in its environment |
| predation | act of one organism feeding on another |
| symbiosis | close mutualistic, parasitistic, or commensal association between 2 or more species that live together |
| mutualism | symbiotic relationship where both species benefit |
| commensalism | symbiotic relationship in which one organism benefits and the other is neither helped nor harmed |
| parasitism | symbiotic relationship where on organism benefits at the expense of another |
| individual - population - community - ecosystem - biome - biosphere | order from most specific to broadest |
| individual / organism | any unicellular or multicellular form (with the characteristics of living things) |
| population size | a number of organisms present in a given population at a given time |
| population density | number of individuals within a population per unit area |
| producer/consumer, predator/prey, parasite/host | 3 main types of feeding relationships |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.