Lesson 5.1.1
5.1.1 Ecosystems, communities, populations and biotic and abiotic factors Quiz: Pearson Edexcel Biology, Unit 5
20 questions
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Lesson 5.1.1, Ecosystems, communities, populations and biotic and abiotic factors: 20 multiple choice questions for the Pearson Edexcel Biology (9BI0), Unit 5: On the Wild Side, written with Revision Ninja.
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The 20 questions
-
Which term describes all individuals of one species in a given area?
- Community
- Niche
- Ecosystem
- Population
-
Which term describes all the populations of different species living together in one area?
- Habitat
- Niche
- Community
- Ecosystem
-
What is included in an ecosystem that is NOT part of a community?
- Decomposers
- Consumers
- Producers
- Abiotic factors
-
Which factor is a biotic influence on the distribution of a population?
- Light intensity
- Temperature
- Predation
- Soil pH
-
Which of the following is an abiotic factor that limits plant distribution?
- Grazing pressure
- Predation level
- Soil moisture content
- Interspecific competition
-
What is the main purpose of using quadrats in ecology?
- Determining soil pH
- Tracking animal migration
- Estimating abundance
- Measuring light intensity
-
What do line or belt transects directly measure across a habitat?
- Rate of photosynthesis
- Total ecosystem biomass
- Genetic diversity
- Distribution along gradients
-
A student counts an average of 4 daisies per 0.5 m^2 quadrat in a meadow of 2000 m^2. What is the estimated total population of daisies?
- 8000
- 2000
- 4000
- 16000
-
Which set of measurements consists only of abiotic factors in a terrestrial habitat?
- Grazing and competition
- Light and temperature
- Decomposition and parasitism
- Predation and disease
-
What term describes factors like food availability that restrict population growth?
- Successional stages
- Trophic levels
- Abundance indicators
- Limiting factors
-
What type of competition occurs between individuals of different species for the same resource?
- Intraspecific competition
- Interspecific competition
- Mutualistic interaction
- Primary succession
-
Which abiotic factor best explains higher plant diversity near a river than on dry hills?
- Fungal disease frequency
- Soil moisture content
- Herbivore population size
- Interspecific competition rate
-
Why must quadrats be placed using random coordinates during field sampling?
- To increase succession
- To maximise yield
- To prevent bias
- To decrease diversity
-
A steady decrease in plant abundance along a transect indicates the presence of what?
- Primary succession
- An environmental gradient
- A climax community
- Intraspecific competition
-
Predation is classified as which type of ecological factor?
- Abiotic factor
- Edaphic factor
- Climatic factor
- Biotic factor
-
Which sampling technique best determines species distribution changes across a stream bank?
- Mark-release-recapture
- Sweep netting
- Random quadrat sampling
- Interrupted belt transect
-
What is defined as a community of organisms interacting with their physical environment?
- Ecosystem
- Niche
- Population
- Microhabitat
-
Which term describes all the living populations of different species in a pond?
- Abiotic environment
- Habitat
- Ecosystem
- Community
-
A mouse population declines as fox numbers increase. Which biotic factor caused this?
- Mutualism
- Predation
- Parasitism
- Interspecific competition
-
In a quadrat survey, a student finds 12 buttercups in each of 10 quadrats of 0.25 m^2 area. What is the estimated density of buttercups per m^2?
- 12
- 48
- 120
- 2.5
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