WorksheetsBIODIVERSITY
Total questions: 33
Worksheet time: 33mins
What does biodiversity mean?
specific species in an area
variety of species in an area
All abiotic life
Nitrogen fixation
Biodiversity is important to keep an area (biome) healthy. In this example "Food Web A" is sustainable. Why is sustainability important for an ecosystem in "Food Web A".
If one organism is removed the food web can still operate (work) with little or no negative effect.
If an organism is removed the food web will collapse and will affect the environment.
a species that is not native to a particular region
endemic
exotic
endangered
extinct
species that are native to and found only within a limited area
endemic
exotic
endangered
extinct
Which of the following would be most effective in slowing the loss of biodiversity?
creating large parks/preserves in biodiversity hotspots
requiring every country to maintain a seed bank
In what part of the world are the greatest number of extinctions occurring?
in deserts
in the Arctic
in tropical rain forests
The level of biodiversity that involves a variety of habitats and communities is _____ diversity.
ecosystem
population
genetic
species
Species that are clearly critical to the functioning of an ecosystem are known as
biodiversity
keystone species
main species
native species
A species that is likely to become extinct if protective measures are not taken immediately is known as
threatened species
endemic species
keystone species
endangered species
A community is
Several different populations scattered across several states.
Several different organisms in the same geographic area
One type of organism in the same geographic area
Several different populations in the same geographic area
A stable ecosystem typically has high biodiversity.
True
False
Define genetic diversity
a variety of genes and traits within a species
a variety of ecosystems in a given area
system made up of all the living and nonliving things in a given area
a variety of species in an ecosystem
Which ecosystem below has the HIGHEST biodiversity?
What are the 3 types of biodiversity (SELECT 3)
Genetic
Species
Ecosystem
Size
Biotic
The greater the ____________________, the more likely a species is to survive changes to their environment
Genetic Diversity
Species Diversity
Ecosystem Diversity
Why are bees considered a keystone species?
The honey they make supports the bear population
They pollinate flowers that produce fruit which supports the ecosystem
They live in hives
The primary causes of extinction (and endangerment and threatened status) is...
polar ice cap melting
global warming
habitat loss and degradation
burning of fossil fuels
How does habitat fragmentation reduce genetic diversity in species?
Habitat fragmentation makes nonnative species introduction possible.
Habitat fragmentation opens migration routes.
Habitat fragmentation isolates a large population into smaller groups.
Habitat fragementation encourages open gene flow.
Programs that breed animals in captivity then release them to the wild are called...
poaching
Breeding Buildings
Captive Breeding Programs
Catch and Release Programs
Habitats can be preserved by...
Reducing recycling
Building more roads
Reducing pollution, developing conservation parks
Introducing invasive species
What is so special about tropics that account for their greater biological diversity? Tick the appropriate option.
Tropics had glaciation in the past and cyclones in the present, that helps in species richness
Tropics receive less sunlight when compared to poles, biological diversity becomes more in less sunlit areas.
There is more solar energy in the tropics, contributing to more productivity and hence greater biological diversity.
The approach of conservation, where the whole ecosystem is protected in its natural habitat , in order to conserve the biodiversity at all levels is called as _____approach.
In situ conservation
Ex situ conservation
