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Ecology Vocabulary

(GCSE Standard) must-know terms for ecology & the environment

TermDefinition
Population All organisms of one species living in a certain area at a certain time
Community All populations living in a certain area at a certain time
Habitat Area and sources used by a certain species
Ecosystem Community that includes abiotic (and biotic) factors, interactions between organisms and food chains and webs
Biotic factor Biological (living) factor affecting an ecosystem, such as food supply and predation
Abiotic factor Physical or chemical (non-living) factor affecting an ecosystem, such as temperature changes and rainfall
Producer Organism that makes its own food (plant)
Primary Consumer Organism that feeds on producers (herbivore)
Secondary Consumer Organism that feeds on primary consumers (carnivore)
Tertiary Consumer Organism that feeds on secondary consumers (omnivore)
Biodiversity Amount of variation shown by organisms in an ecosystem, including the amount of species and the abundance of each species.
Decomposer Organism (bacterium or fungus) that breaks down dead organism remains and organic substances
Trophic level Feeding level in a food chain or a food web
Food chain Diagram that shows the feeding relationships and energy transfer in an ecosystem
Food web Diagram that shows how several food chains are linked
Pyramid of Number Diagram representing the amount of organisms at each trophic level
Pyramid of Biomass Diagram representing the total dry mass of organisms at each trophic level
Pyramid of Energy Diagram representing the amount of energy transferred at each trophic level
Nitrogen Fixing Bacteria Bacteria that convert nitrogen gas into ammonia, and are found in soil and root nodules of legumes
Root Nodules Bumps on roots of legumes that contain nitrogen fixing bacteria
Nitrifying Bacteria Bacteria that convert ammonia into nitrates
Denitrifying Bacteria Bacteria that convert useful nitrates into nitrogen gas
Created by: Abdullah2016
Popular Ecology sets

 

 



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