Ecology Word Scramble

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Term	Definition
Competition	The fight for limited resources.
Predation	Where one organism hunts, kills and eats another to obtain its nutrition.
Predator	The animal that does the hunting.
Prey	The animal that is hunted.
Trophic Level	The level at which an organism gains its nutrition.
Parasitism	A form of nutrition where one organism gains its nutrition by feeding directly on the other organism, causing it harm.
Interdependence	Where two or more organisms depend on one another within an ecosystem.
Biosphere	That part of the planet containing living organisms.
Ecosystem	A group of clearly distinguished organisms that interact with their environment as a unit.
Habitat	The place where an organism lives.
Population	All the members of the same species living in an area.
Community	All the different populations in an area.
Abiotic factors	Non-living factors.
Biotic factors	Living factors.
Climatic factors	Refer to weather over a long period of time.
Edaphic factors	Relating to soil.
Producers	Organisms that can make their own food.
Flora	The plant life in an ecosystem.
Consumers	Organisms that take in food made by other organisms.
Fauna	All the animal life in an ecosystem.
Decomposers	Organisms that feed on dead organic matter
Detritus feeders	Organisms that feed on small pieces of dead organic matter.
Food web	Consists of two or more interlinked food chains.
Pyramid of numbers	Represents the number of organisms at each trophic level in a food chain.
Niche	The functional role that an organism plays in the community.
Nutrient recycling	The way in which elements are exchanged between the living and the non-living components of an ecosystem.
Nitrogen fixation	The conversion of nitrogen gas into ammonia, ammonium or nitrate.
Nitrification	The conversion of ammonia and ammonium compounds to nitrite and then to nitrate.
Denitrification	The conversion of nitrates to nitrogen gas.
Pollution	Any harmful addition to the environment that makes it less able to sustain life.
Pollutants	Harmful additions to the environment.
Conservation	The wise management of the existing natural resources in an ecosystem in order to maintain a wide range of habitats and prevent the death and extinction of organisms.
Intra-specific competition	Takes place between members of the same species.
Inter-specific competition	Takes place between members of different species.
Contest competition	An active physical contest between two individual organisms where one organism gets the resource and the other is left without it.
Scramble competition	All of the competing organisms get some of the resource.
Symbiosis	Occurs when two organisms of different species live (or may have to live) in close association and at least one of them benefits.
Qualitative study	Records the presence or absence of organisms.
Quantitative study	Records the numbers of organisms that are present.
Adaptation	Any alteration that improves an organism's chances of survival and reproduction
Key	A means of naming organisms by answering a series of questions with alternative answers.
Percentage cover	An estimate of the amount of ground in a quadrat covered by each species

Created by: J Glennon

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