biology ecology crossword

The communities/ living organisms (biotioc factor) and environmental factors (abiotic factor) in a particular area . These factors are interacting and independent, They make up a self contained system That's self supporting in terms of energy flow.

Ecosystem

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All the factors in a habitat which affect an organism . These may either living (biotic) or non-living (abiotic)

Environment

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All the members of one species in a habitat at one time

Community

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The geographic area occupied by an ecosystem

Habitat

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The role of a species within a ecosystem ; its location/ spatial habitat and functions - relationships with other organisms -and it's effect on the environment

Niche

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A group of potentially interbreeding individuals; which do not normally interbreed with any other groups to produce living fertile offspring .

Species

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A sequence of organisms in an ecosystem in which each is the food of the next organism in that sequence . Arrows represent energy flow through the chain.

Food chain

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All the interconnected food chains in an ecosystem ( usually complex to calculate)

Food web

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A feeding level in a food web - defined by the method of obtaining food . All the organisms in a particular _________ are the same number of energy transfers away from the producers.

Trophic level

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The first organism in a food chain usaully an autotroph

Producer

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An organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

Autotroph

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An organism deriving its nutritional requirements from complex organic substances.

heterotroph

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The second organism in a food chain ( second tropic level) it consumes energy from the producer so it is a herbivore

Primary consumer

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An animal that feeds on plants

herbivore

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An animal that feeds on flesh.

carnivore

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Environmental features such as climatic and edaphic factors , that do not derive directly from the presence of other organisms .

Abiotic factor

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Any characteristic of the environment resulting from the physical , chemical or biotic components of the soil

Edaphic factor

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Those features of the environments of organisms arising from the activities of other organisms.

Biotic factor

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Consumes/ obtains energy from the primary consumer thus a carnivore

Secondary consumer

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A representation of the number of organisms in each trophic level in a ecosystem; the width of each block is proportional to the number of organisms in each trophic level .

Pyramid of numbers

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A better representation of the biomass in each trophic level in a ecosystem ; the width of each block is proportional to the biomass in each trophic level.

Pyramid of biomass

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The total quantity or weight of organisms in a given area or volume.

Biomass

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A representation of the energy in each trophic level in a ecosystem . The width of each block is proportional to the energy in each trophic level.It is usually measured in KJ M.^-2 year^-1.

Pyramid of energy

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The maximum population that an ecosystem can support

Carrying capacity

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The environmental factors which reduce poulation growth rate e.g disease , predation, competition

Environmental resistance

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biology ecology crossword

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