WorksheetsBiodiversity Index
Total questions: 25
Worksheet time: 25mins
An ecosystem has 150 organisms of 15 different species. What is the biodiversity index of this ecosystem?
165
10
0.15
0.1
Using the formula and data, calculate the biodiversity index
0.2
0.27
0.19
0.21
Biodiversity index is a measure of the biodiversity of an ecosystem. The higher the number the healthier the ecosystem is considered.
True
False
When an ecosystem has a high number of species present it means that it has a ___________
A. High Biodiversity
B. Low Biodiversity
C. Biodiversity
D. Extinction
(a) is the relative proportion of individuals within the different species in a given area.
Species evenness
species richness
Scientists can use aerial photos to collect data to determine the biodiversity index of an area.
True
False
Biodiversity, aka biological diversity, usually refers to
the same species in a general location
the number of different species in a given area
the number of animal species in a given area
the number of plant species in a given area
What does biodiversity mean?
Only one species in an area.
The different amount of species in an area
All abiotic life
Nitrogen fixation
Why is "A" less biodiverse than "B"?
Image "A" is more biodiverse.
Image "A" has many corn plants and this makes it have high "rich" biodiversity.
Image "A" has a lot more plants than image "B"
Even though "A" has a lot of corn plants they are all the same species and makes this a low "poor" biodiverse area.
Biodiversity is greater
At the poles
At the equator
At the middle latitudes
Nowhere...it is equal across the globe.
Which of these human activities is impacting global biodiversity?
Overfishing
Deforestation (cutting down forests)
Creating dams for power
Growth of urban centers (cities)
Which of the following is a measure of biodiversity that takes into account both species richness and species evenness?
Simpson's Index
Shannon Index
Species Richness
Species Abundance
In a forest ecosystem, there are 200 trees of 20 different species. What is the biodiversity index if calculated using the formula: number of species/total number of organisms?
0.1
0.2
10
20
What does a biodiversity index of 1 indicate about an ecosystem?
High biodiversity
Low biodiversity
No biodiversity
Moderate biodiversity
Which method can be used to visually assess the biodiversity of a large area?
Satellite imagery
Soil sampling
Water testing
Genetic analysis
Why is a high biodiversity index important for an ecosystem?
It indicates a stable and resilient ecosystem
It shows the ecosystem is under threat
It means the ecosystem has few species
It suggests the ecosystem is artificial
Which of the following is NOT a factor that affects biodiversity index?
Climate change
Habitat destruction
Species interaction
Color of species
How does species evenness contribute to the biodiversity index?
It measures the dominance of a single species
It ensures equal representation of all species
It counts the total number of species
It focuses on the rarest species
What is the primary difference between species richness and biodiversity index?
Species richness counts species; biodiversity index considers evenness
Biodiversity index counts species; species richness considers evenness
Both are the same
Neither considers species evenness
Which of the following ecosystems is likely to have the highest biodiversity index?
Tropical rainforest
Desert
Tundra
Urban park
What role do keystone species play in biodiversity index?
They have a large impact on species richness
They reduce the biodiversity index
They have no effect on biodiversity
They increase species evenness
How can human activities negatively impact the biodiversity index of an area?
By introducing invasive species
By planting more trees
By conserving wildlife
By creating protected areas
Which of the following is a direct method to calculate biodiversity index?
Counting species and individuals
Estimating biomass
Measuring genetic diversity
Observing animal behavior
What does a low biodiversity index suggest about an ecosystem's health?
It may be vulnerable to environmental changes
It is highly resilient
It has a wide variety of species
It is stable and balanced
Which scientific tool is commonly used to calculate biodiversity index in a given area?
Quadrat sampling
Thermometer
Barometer
Anemometer
