AO1 WJEC Biodiversity and Adaptations Quiz

What is the definition of biodiversity?

• The number of people in an area

• The variety of food sources in a habitat

• The variety of species, genes, and ecosystems in a given area

• The amount of pollution in an ecosystem

How does biodiversity vary between the two poles of the Earth?

• Biodiversity is higher at the poles

• Biodiversity is equal across the globe

• Biodiversity increases from poles to equator

• Biodiversity is highest at higher altitudes

What does “biodiversity varies temporally” mean?

• Biodiversity never changes

• Biodiversity changes depending on weather only

• Biodiversity can change over time, like with seasons or years

• Biodiversity depends only on human activity

Which of the following are factors that can cause variation in biodiversity?

• Climate, habitat destruction, invasive species

• Cloud patterns and moon cycles

• Day length and rainfall only

• Only migration patterns

What calculation is performed to assess biodiversity in a habitat?

• Mean population size

• Biodiversity index (Simpson’s Index of Diversity)

• Average lifespan

• Total area of land

What two things must be counted to perform a biodiversity index calculation?

• Temperature and rainfall

• Total number of individuals and number of species

• Number of predators and prey

• Area and climate

What two numbers form the lower and upper limits of the biodiversity index (D)?

• 1 and 100

• 0 and 1

• -1 and +1

• 10 and 1000

How could you tell from the biodiversity index calculation that an area is more diverse than another?

• The higher the value of D, the lower the diversity

• The closer D is to 0, the more diverse

• The closer D is to 1, the more diverse

• D must be exactly 0.5 to be considered diverse

How would you sample two areas to get representative data?

• Collect all organisms from both areas

• Choose one spot and sample repeatedly

• Use random sampling with quadrats and repeat multiple times

• Sample only visible animals during the day

What is polymorphism?

• One gene coding for one trait

• Multiple individuals showing the same trait

• The presence of two or more alleles for a trait in a population

• Mutations that change species