All about biology and ecosystems....
About this set
Created by:
ilovesinging on March 24, 2011
Subjects:
Log in to favorite or report as inappropriate.
Order by
25 terms
Terms | Definitions |
|---|---|
 Science | the systematic study of the structure and behaviour of the physical world by watching, measuring and performing experiments |
| Biotic | living environment e.g. fauna and flora |
| Abiotic | non-living environment e.g. rocks |
| Species | a group of organisms that can interbreed and produce a fertile offspring |
| Habitat | the environment in which a species normally lives or the locations of a living organism |
| Population | a group of organisms of the same species who live in the same area at the same time |
| Community | a group of populations living and interacting with each other in an area |
| Ecosystem | a community and its abiotic factors |
| Ecology | the study of relationships between living organisms and the environment |
| Autotroph | an organism that synthesises its organic molecules from simple inorganic substances(plant) |
| Heterotroph | an organism that obatins organic molecules from other organisms (animal) |
| Consumer | an organism that ingests other organic matter that is living or recently killed |
| Producer | an organism that makes food using inorganic material(sunlight).plant-photosynthesis |
| Detritivore | an organism that ingests non-living oranic matter e.g. snails and worms |
| Saprotroph | an organism that lives in or on non-living organic matter, secreting digestive enzymes into it and absorbing the products of digestion |
| Trophic Level | the position an organism occupies in a food chain-what it eats and what eats it |
| Food Web | a series of related food chains. Organisms are related by predator-prey and consumer-resource interactions |
| Decomposers | organisms, typically microorganisms, that feed on dead plant and animal matter, causing the matter to be recycled by other living things |
| Niche | an organism's habitat and function in the food web |
| Competition | a contest between individuals, groups, nations, animals etc. for territory, a niche or a location of resources |
| Herbivory | the consumption of herbacecous vegetation |
| Predation | relationship where one animal(predator) catches and kills another(prey) to eat |
| Parasitism | relationship where one organism(parasite) lives in or on another(host) for most of its lifecycle deriving its nutrients from the host |
| Mutualism and commensalism | a relationship in which both organisms benefit from the association(opp of symbiosis) |
| Symbiosis | a relationship where not all organisms benefit from the association(opp of mutualism) |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.