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AQA A level Biology Unit 4
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Questions in this quiz (16)
1Which of these describes the term habitat?
- AA group of organisms of the same species living in the same area at the same time.
- BThe place where an organism lives and the environment it is found in.
- CAll the species living in a particular area at the same time.
2The role of an organism within an ecosystem that depends on adaptations to feeding and abiotic factors, best describes what?
- AA niche.
- BAn environment.
- CA species.
3A group of organisms of the same species living in a particular area at the same time, is a what?
- AA species.
- BA population.
- CA community.
4What is a community?
- AAn area in which organisms interact with each other and their physical environment.
- BAll the species living in a particular area at the same time.
- CThe conditions surrounding an organism, they can be biotic (living) or abiotic (non-living) factors.
5An abiotic factor is a living factor.
- ATrue
- BFalse
6A biotic factor is a living factor.
- ATrue
- BFalse
7Examples of abiotic factors are:
- ApH of soil
- BPredation
- CLight intensity
- DCarbon dioxide concentration
- EDisease
8Examples of biotic factors are:
- AOxygen solubility
- BLight intensity
- CCompetition
- DpH of water
- EPredation
- FDisease
9Intraspecific competition is between individuals of the same species?
- ATrue
- BFalse
10Interspecific competition is between individuals of different species.
- ATrue
- BFalse
11Features of a predator prey graph are...
- AThe prey population is always lower than the predator population.
- BThe predator population changes after the change in prey population.
- CPredator population is dependent on prey population.
12How should quadrats be used to avoid bias?
- ARandom coordinates should be generated using random number tables.
- BA large sample should be taken.
- CA set of axis should be created using tape measures.
13How should quadrats be used to gain representative data?
- AA large sample should be taken.
- BRandom coordinates should be generated using random number tables.
- CA running mean should be kept, when this becomes constant sufficient data has been collected.
14Limitations of using quadrats are...
- AThey are too large to carry.
- BMany may have to be used to gain sufficient data and this takes a long time.
- CThe organism being recorded may be spread over vast areas.
- DResearchers may miss count some of the species in the quadrat.
15A line transect would be used in sampling an ecosystem when?
- AThe ecosystem in in the same area.
- BThe ecosystem is spread over an area that shows transition.
16Which of these are stages in the mark-release-recapture method?
- AThe individual is marked in a non harmful way so its chance of survival is not affected.
- BOnly marked organisms are recaptured.
- CA sample of a population is caught and counted.
- DThe sample are released back into their natural environment.
- EThey are recaptured soon after being released.
- FTime is allowed for the marked individuals to remix randomly and evenly into the population.
- GA second sample is then caught and counted.
- HIn the second sample there will be marked individuals recaptured.
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- Quiz on AQA A level Biology Unit 4, created by daisymaypattinson on 18/12/2014.
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- daisymaypattinson
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- English
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