Ecosystems Definition Quiz

Match the definition to the correct word

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Last updated: August 31, 2018

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First submitted	August 31, 2018
Times taken	50
Average score	27.8%
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Definition	Word
The living components of an ecosystem	Biotic Factors
Non-living conditions in a habitat	Abiotic factors
An organism that converts light energy to chemical energy	Producer
Mass of living material	Biomass
All the interacting living organisms and the non living conditions in the area	Ecosystem
A stage in the food chain	Trophic Level
An organism that obtains its energy by feeding on other organisms	Consumer
An organism that breaks down dead organisms releasing nutrients back into the ecosystem	Decomposer
An organism which speeds up decay by breaking down detritus into smaller pieces	Detritivores

Definition	Word
Conversion of nitrogen gas to ammonium compounds	Nitrogen Fixation
Conversion of nitrates to nitrogen gas	Denitrification
The progressive replacement of one dominant type of species or community by another in an ecosystem, until a stable climax community is reached	Succession
A seral stage is a stage of succession	Seral Stage
The first organisms to colonise an area	Pioneer Species
An organic component of soil formed by the decomposition of leaves and other plant material by soil microorganisms	Humus
The final stage in succession, where the community is said to be in a stable state	Climax Community
A stage in succession where the artificial or natural factors prevent the natural climax community from forming	Plagioclimax
A measure of biodiversity between 0 and 1 that takes into account both species richness and evenness	Simpson's Index of Biodiversity

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