Ecology flashcards

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What is a Population ?
All of the organisms of one species in one habitat at a particular time.
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What is the definition of a habitat ?
A place where a community of organisms are found.
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What is an ecosystem ?
A self-contained unit that includes community and non-living environmental factors.
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What is the difference between interspecific and intraspecific ?
interspecific is competiton between members of different populations intraspecific is between the same population for resources.
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What is an advantage of random sampling ?
It removes bias.
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What information is required to calculate growth rate ?
Number of births and immigration, number of deaths and emigration.
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What are the advantages of pyramids of biomass ?
More quantitative and reliable.
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What is the definition of a trophic level ?
The different feeding levels in a food web.
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What are the advantages of biological agents ?
Stops specific pests, environmentally friendly.
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What are the advantages of intensive rearing of livestock ?
Increase in profit and increase production of meat.
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What is the definition of assimilation ?
The conversion of nutrients into living tissue.
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What two forms Nitrogen can be fixed into ?
Nitrate ions and Ammonium ions.
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What is Nitrogen fixation ?
converting Nitrogen gas into a useful compound.
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What is Nitrification ?
The addition of Oxygen to ammonium ions to produce nitrites and nitrates.
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What is Denitrification ?
Conversion of nitrites into nitrogen gas.
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Other cards in this set

Card 2

Front

What is the definition of a habitat ?

Back

A place where a community of organisms are found.

Card 3

Front

What is an ecosystem ?

Back

Preview of the front of card 3

Card 4

Front

What is the difference between interspecific and intraspecific ?

Back

Preview of the front of card 4

Card 5

Front

What is an advantage of random sampling ?

Back

Preview of the front of card 5
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