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25 terms

All about biology and ecosystems....

STUDY
PLAY
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)