Lesson 4.6.3.3
4.6.3.3 Extinction Quiz: AQA Combined Science, Unit 6
20 questions
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Lesson 4.6.3.3, Extinction: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 6: Inheritance, variation and evolution, written with Revision Ninja.
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The 20 questions
-
What defines when a species has undergone extinction?
- migration to islands
- hibernation begins
- no individuals remain
- population halves
-
Which factor can directly contribute to the extinction of a species?
- rapid climate change
- standard seasonal shifts
- more daylight hours
- increased rainfall
-
Which biotic factor can cause a species population to face extinction?
- rising sea levels
- volcanic eruption
- asteroid impact
- new pathogen
-
Which group is most at risk when dissolved oxygen in water disappears?
- desert reptiles
- arboreal mammals
- terrestrial plants
- aquatic animals
-
Which human activity is a major driver of species extinction?
- recycling plastic
- wind farm creation
- solar panel usage
- habitat destruction
-
What is a major risk of having very low population numbers in a species?
- failure to breed
- excessive competition
- rapid mutation rate
- increased food supply
-
Extinction often happens when a species fails to do what?
- adapt to changes
- increase body size
- change diet daily
- hibernate yearly
-
What happens permanently to a species' gene pool once it goes extinct?
- genes transfer to rivals
- genes lost forever
- DNA remains dormant
- alleles duplicate rapidly
-
A lake warms and cold-water fish die out. What type of factor is this?
- parasitic
- biotic
- abiotic
- symbiotic
-
What is the typical result when a highly effective new predator is introduced?
- plant overgrowth
- predator starvation
- prey population boom
- prey population decline
-
A rare frog's population falls after a new fungal pathogen arrives. What type of factor is the pathogen?
- biotic
- classifying
- adaptive
- abiotic
-
A unique endemic species disappears after its forest is cleared. What caused this?
- natural migration
- habitat loss
- genetic mutation
- increased rainfall
-
What can severe food competition with an invasive species cause?
- population collapse
- rapid speciation
- increased fertility
- territory expansion
-
A factory discharges waste into a river and fish die. Which factor is this?
- selective breeding
- global warming
- deforestation
- pollution in water
-
Why does a rare plant with low genetic variation face high extinction risk?
- excessive nutrients
- rapid reproduction
- high genetic variation
- low genetic variation
-
What major risk does habitat fragmentation pose to small animal populations?
- overpopulation
- isolation
- increased mutation rate
- enhanced migration
-
What happens to species that fail to adapt to rapid environmental changes?
- extinction
- rapid evolution
- asexual reproduction
- increased immunity
-
Which major factor most increases the risk of species extinction?
- Selective breeding
- Habitat loss
- Silent mutation
- Cell division
-
What term describes a species with no remaining living individuals anywhere?
- Extinct
- Mutated
- Endangered
- Fossilised
-
Why do species often go extinct when their environment changes extremely rapidly?
- reproduction rates double
- mutations stop occurring
- natural selection is slow
- ecosystems become biotic
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