Lesson 4.1.1
4.1.1 Biodiversity, endemism and threats to variety of life Quiz: Pearson Edexcel Biology, Unit 4
20 questions
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Lesson 4.1.1, Biodiversity, endemism and threats to variety of life: 20 multiple choice questions for the Pearson Edexcel Biology (9BI0), Unit 4: Biodiversity and Natural Resources, written with Revision Ninja.
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The 20 questions
-
Which term describes the variety of living organisms, including genetic and species diversity?
- Species richness
- Endemism
- Genetic drift
- Biodiversity
-
What term describes a species found naturally in only one specific geographical location?
- Extinct
- Endangered
- Endemic
- Epidemic
-
What is the primary cause of global biodiversity loss caused by human activity?
- Genetic drift
- Natural selection
- Habitat loss
- Volcanic activity
-
Which factor leads to high levels of endemic species on isolated oceanic islands?
- Geographical isolation
- Population migration
- High gene flow
- Selective breeding
-
What primary threat do introduced non-native invasive species pose to native species?
- Enhanced habitat size
- Increased genetic diversity
- Mutualistic relationships
- Competition for resources
-
Which threat poses the greatest risk of extinction to specialised species?
- Excess food supply
- Habitat destruction
- Random mutation
- High gene flow
-
What is the term for the total variety of species in a habitat?
- Species richness
- Niche breadth
- Allele frequency
- Heterozygosity
-
What direct economic benefit does plant biodiversity provide to the pharmaceutical industry?
- Higher soil erosion
- Lower crop yields
- Increased pest numbers
- Sources of drugs
-
Which method is an ex situ conservation measure used to save endangered species?
- Habitat restoration
- National parks
- Captive breeding
- Local nature reserves
-
What is the main biological purpose of seed banks and zoos in conservation?
- Promoting rapid speciation
- Increasing habitat loss
- Preventing gene expression
- Preserving genetic diversity
-
Which feature demonstrates biodiversity at the genetic level within a single species?
- Variety of alleles
- Range of biomes
- Number of habitats
- Count of ecosystems
-
Which level of biodiversity does the number of different ecosystems in a region describe?
- Ecosystem diversity
- Genetic diversity
- Population density
- Allele diversity
-
Why is the extinction of an endemic species of significant global conservation concern?
- Increased species richness
- Rapid geographical spread
- Temporary population drop
- Permanent species loss
-
Which process caused by fertiliser runoff into lakes reduces aquatic species diversity?
- Eutrophication
- Primary succession
- Bioaccumulation
- Niche differentiation
-
Which ecological term describes the total number of different species in a given area?
- Genetic diversity
- Species evenness
- Species richness
- Endemic density
-
Which environmental conditions are used in seed banks to prolong seed viability?
- Hot and dry
- Cool and dry
- Cold and humid
- Warm and moist
-
Why are undiscovered wild plant species considered valuable to human medicine?
- Decreased genetic variation
- Lower pest resistance
- Reduced soil quality
- Potential new drugs
-
Which human activity directly depletes marine fish populations below sustainable levels?
- Overfishing
- Afforestation
- Captive breeding
- Habitat creation
-
Which factor acts alongside habitat loss and climate change to reduce biodiversity?
- Reforestation
- Pollution
- Speciation
- Conservation
-
Which term refers to a group of individuals of the same species that can interbreed in one area?
- Community
- Population
- Ecosystem
- Biome
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