The place where an organism, species or population lives.
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Population
All the individuals of a species living in a particular area.
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Exoskeleton
A skeleton on the outside of an organism such as found in insects and crustaceans.
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Turbulance
The roughness of the environment caused by chaotic air or water flow.
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Heterotroph
An organism that gains its organic compounds for energy and growth from other organisms.
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Cellulase
An enzyme that digests cellulose that is produced by some bacteria, fungi and protozoans.
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Cellulose
The carbohydrate made of linked glucose molecules, which is a major component of plant cell walls and wood.
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Symbiosis
A relationship between organisms of different species that live together. One benefits while the other species may benefit, be unaffected or suffer.
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Mycorrhizal fungi
Symbiotic fungi associated with plant roots that gain carbohydrates from the plants and aid the uptake of nutrients such as phosphates from the soil by plants.
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Pollination
The transfer of the male plant gamets onto the female part of a flower, resulting in fertilisation and seed production.
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Community
A community of species refers to the populations of all the species living in a particular area.
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Taxonomy
The study of organisms to assess how they may be grouped or classified.
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Taxon
A group of organisms based on their biological similarities.
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Genus
A group of closely related species.
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Ecosystem
The community of organisms living in an area, their inter-relationships and interactions with their abiotic environment.
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Biome
A large geographical region with particular climatic features, in which a characteristic, unique community of species lives.
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Ecological succession
The sequences of changes in community composition that changes as an area is colonised and develops until a climax community is eventually produced.
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Lithosphere
The sequence of changes in community composition as bare rock is colonised and becomes a terrestrial climax community.
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Autotrophs
An organism that can capture light or chemical energy from the environment to make high-energy substances such as carbohydrates. They include photoautotrophs and chemoautotrophs.
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Edaphic
A factor related to soil, particularly as it affects living organisms.
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Density independent factors
A factor that is not influenced by the population density of the species that may be affected, e.g. drought and volcanic eruption.
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Density dependant factors
A factor whose effect is affected by the density of the population, e.g. disease and food supply.
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Carrying capacity
The greatest population that can be supported sustainably in an area.
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Sigmoidal population growth
The growth pattern of a population where abundant resources allow rapid growth followed by population stabilisation as the carrying capacity is reached.
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Other cards in this set
Card 2
Front
All the individuals of a species living in a particular area.
Back
Population
Card 3
Front
A skeleton on the outside of an organism such as found in insects and crustaceans.
Back
Card 4
Front
The roughness of the environment caused by chaotic air or water flow.
Back
Card 5
Front
An organism that gains its organic compounds for energy and growth from other organisms.
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