Ecological key terms bio4

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Heterotroph
An organism obtaining food by feeding on complex organic matter ie a consumer
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Intraspecific competition
Individuals of the same species attempt to make use of the same scarce resources
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Respiration
The process whereby cells release energy from organic molecules
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Sere
The name given to stage in succession
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Net productivity
The energy available for the next tropic level after respiration
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Climax community
The end stage in a succession
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Pioneer
A plant species found in the early stage of succession
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Population
All the organisms of the same species living together in a particular habitat
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Food web
The complex interactions between food chains in an ecosystem
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Community
All the populations that live in a particular place at the same time
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Producers
Green plants and some bacteria that make their own food
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Abiotic factors
Physical and chemical features of the environment that have an effect on a population of organisms
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Gross productivity
The total energy fixed during photosynthesis
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Trophic level
The position and organism occupies in a food chain
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Consumers
Heterotrophs which obtain nourishment by feeding on other organisms
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Biotic factors
Biological features of the environment that have an effect on a population of organisms
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Food chain
A linked series of living organisms, each of which is the food for the next level, showing energy flow through the ecosystem
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Niche
The role of an organism has in an ecosystem, including where it lives and what it eats
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Habitat
The place within an ecosystem where a population lives
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Biomass
The dry mass of organisms
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Interspecific competition
Individuals of more than one species attempt to make use of the same scarce resources
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Ecosystem
The community of living organisms and the biotic factors that affect them
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Succession
The changes that occur in an ecosystem over time
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Card 2

Front

Individuals of the same species attempt to make use of the same scarce resources

Back

Intraspecific competition

Card 3

Front

The process whereby cells release energy from organic molecules

Back

Preview of the back of card 3

Card 4

Front

The name given to stage in succession

Back

Preview of the back of card 4

Card 5

Front

The energy available for the next tropic level after respiration

Back

Preview of the back of card 5
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Comments

Swallowtail

This set of flashcards usefully defines most of the key biological terms found when studying ecology so would be useful for any A level biology student needing to study this topic for their specification. Download a set, print them off and then test yourself.

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