Lesson 4.7.1.2
4.7.1.2 Abiotic factors Quiz: AQA Biology, Unit 7
20 questions
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Lesson 4.7.1.2, Abiotic factors: 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 7: Ecology, written with Revision Ninja.
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The 20 questions
-
Which abiotic factor is the main energy source for plants in a community?
- Light intensity
- Availability of food
- New pathogens
- New predators arriving
-
Which abiotic factor measures the acidity of soil?
- Light intensity
- Soil pH
- Wind speed
- Moisture level
-
Which abiotic factor do aquatic animals require for aerobic respiration?
- Moisture level
- Oxygen level
- Carbon dioxide level
- Light intensity
-
Which abiotic factor measures the amount of water available in a terrestrial habitat?
- Wind direction
- Temperature
- Moisture level
- Soil pH
-
Which abiotic factor describes the movement and speed of air across a habitat?
- Light intensity
- Temperature
- Moisture level
- Wind intensity
-
Which abiotic factor is a gas required by plants for photosynthesis?
- Oxygen
- Methane
- Nitrogen
- Carbon dioxide
-
What does abiotic mean?
- Living
- Producing
- Non-living
- Dead
-
Which of these is a non-living factor listed as affecting a community?
- Temperature
- Interdependence
- Predation
- Competition
-
What is the most likely effect on fish if dissolved oxygen in a lake falls?
- Population decreases
- Population increases
- Photosynthesis increases
- Soil pH increases
-
Adding lime to agricultural soil alters which abiotic factor?
- Wind intensity
- Moisture level
- Light intensity
- Soil pH
-
A decline in frog numbers during a prolonged drought is caused by a change in which abiotic factor?
- Moisture level
- Soil pH
- Light intensity
- Wind direction
-
Adding extra nitrate ions to soil directly alters which abiotic factor?
- Moisture level
- Mineral content
- Light intensity
- Wind direction
-
Which abiotic factor is increased in greenhouses to boost plant growth?
- Soil pH
- Oxygen level
- Carbon dioxide level
- Wind direction
-
Why is wind speed classified as an abiotic factor?
- It changes constantly
- It is non-living
- It is living
- It affects plants
-
Which two abiotic factors mainly affect damp, shady woodland mosses?
- Salinity and pH
- Oxygen and wind
- Temperature and pressure
- Moisture and light
-
A researcher records a rise in temperature over a summer in a habitat. Which abiotic factor is measured?
- Pathogen spread
- Predator numbers
- Food availability
- Temperature
-
How does an increase in average temperature directly affect plant growth rates?
- Stops photosynthesis completely
- Alters enzyme activity
- Increases soil pH
- Prevents seed dispersal
-
What is the direct effect on plants if light intensity decreases significantly?
- Respiration stops
- Transpiration stops
- Photosynthesis increases
- Photosynthesis decreases
-
Which factor in a lake ecosystem is an abiotic factor?
- Water pH
- New predators
- New pathogens
- Food availability
-
What type of factor is the oxygen concentration in a pond?
- Community factor
- Biotic factor
- Abiotic factor
- Genetic factor
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