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WorksheetsTEST: Biodiversity, Populations and Ecosystem Services
Total questions: 45
Worksheet time: 45mins
What term describes the variety of different organisms found in an ecosystem?
population
biodiversity
ecosystem services
When there is high ______________, many species of plants and animals can flourish.
biodiversity
organisms
health
resources
This is a species that has strong interactions with other species and has a large impact on the health and biodiversity of the food web or ecosystem.
exotic species
endemic species
keystone species
base species
What organisms are most in danger from the effects of harmful chemicals through biomagnification?
producers
primary consumers
secondary consumers
top consumers
A healthy forest ecosystem in the Northwest is home to elk, mule deer, chipmunks, ground squirrels, and a variety of plants. What is the relationship between biodiversity and available resources?
Biodiversity is not affected by changes to available resources.
Biodiversity decreases the amount of available resources.
Biodiversity increases with abundant resources and decreases when resources are scarce.
Biodiversity decreases with abundant resources and increases when resources are scarce.
Wolves were reintroduced to Yellowstone National Park in 1995. This keystone species restored the park’s ecosystem. What is the ecological value of a keystone species?
they influence the survival of many other species in an ecosystem.
they prevent the ecosystem from changing and growing.
they protect land and water resources within the ecosystem.
They decrease the number of unwanted species in an ecosystem.
Which of the following do not show how human activities negatively affect biodiversity?
introducing invasive species
growing trees in deforested regions
adding carbon dioxide to the atmosphere
removing natural resources
Sometimes when a bee pollinates a flower, this action is beneficial to humans. Bees are the main pollinators of many plants that humans eat, such as blueberries, potatoes, apples, celery, and strawberries. What are the benefits that humans receive from the ecosystem called?
ecological restoration
sustainability
ecosystem services
ecology
Pick the cultural service
natural resources
water cycle
plants and animals
recreational activities
Pick the provisional service
natural resources
water cycle and nutrients
plants and animals
recreational services
Pick the supporting service
natural resources
water cycle and nutrients
plants and animals
recreational services
Which of the following is NOT and ecosystem service?
Provisioning Services
Regulating Services
Cultural Services
Economic Services
Natural processes such as nutrient cycling and the creation of soils are all examples of what type of ecosystem service?
Provisioning
Regulating
Cultural
Supporting
Bacteria decomposing waste is an example of what type of ecosystem service?
economic
regulating
provisioning
supporting
Which of the following would be an example of a regulating service?
Nutrient cycling
Photosynthesis
Drinking water from a creek
Bees pollinating flowers
The non-material services that enhance the spiritual, intellectual, and social development of humans are called
supporting services
cultural services
provisioning services
regulating services
The services that help all other ecosystem services to fully function (natural cycles and processes)
supporting services
cultural services
provisioning services
regulating services
All of the products that are obtained from an ecosystem are called
provisioning services
regulating services
cultural services
supporting services
The services that help all other ecosystem services to fully function (natural cycles and processes)
supporting services
cultural services
provisioning services
regulating services
Food, medicine, water, and fuel are things provided by
cultural services
supporting services
provisioning services
regulating services
Bioaccumulation refers to the ____.
increase in species diversity in areas that have been protected
ability of an animal to adapt to pollutants in its environment
build-up of pesticides in soil and water supplies
ability of a chemical to build up in an organisms's tissues
data collection about DNA in captive populations of endangered species
Which nonnative species was first intentionally imported but escaped to become an invasive species?
Zebra mussel
Red imported fire ant
Asian carp
American alligator
European honeybee
If the monarch butterfly species was to disappear, which of the following may occur as a direct result of its extinction?
A. Biodiversity within the ecosystem would be reduced
B. Animals that feed on monarch butterflies would have to compete for other food sources in the environment
C. All forests in Mexico will disappear
D. Both A and B
Why were wolves absent from Yellowstone from the 1920's to 1995?
There was no prey available, so they starved.
When all the elk died, the wolves moved to Canada.
Humans hunted and killed all the wolves in Yellowstone and the surrounding area.
The wolves migrated south to Texas for a warmer climate.
What was occurring to the elk population without the existence of the grey wolf?
The population of elk exploded and they were eating and destroying all of the small bushes and trees.
The population of elk decreased slowly.
The population of elk remained the same.
The population of wolves increased tremendously.
Using the graph, why did the elk population go down so dramatically in 1995?
There was a drought that killed all of the producers.
The elk got killed off by poachers.
The population did not decline, it increased.
That is when the reintroduction of the wolves occured and they started to kill the elk.
About how many elk where there in 1995?
18,500
13,000
19
20
About how many elk are there in 2004?
15,000
10,000
5,000
10
Using the graph, about how many wolves were there in 2004?
100,000
75,000
75
40
Why would wildlife biologists say it was necessary to reintroduce wolves into the ecosystem?
to control the elk population
to control the beaver population
to eliminate the producers
none of the above
Which of the following is true about scavengers?
a. they are organsims that feed on dead and decaying material
b. they include organisms like ravens and coyotes
c. both a and b
d. neither a or b
__% of the world's largest fish have been wiped out by fishing?
90%
80%
75%
50%
An example of a population is
all trees in a forest
all maple trees in a forest
all plants in a forest
all animals in a forest
A group of different species that live together and interact in an environment are called a/an ________.
community
habitat
population
ecosystem
