WorksheetsEcosystems Unit 3 Test
Total questions: 39
Worksheet time: 20mins
Name
Class
Date
1.
the variety of organisms on Earth or in a particular habitat or ecosystem
a)
Biodiversity
b)
Proportion
c)
Niche
d)
Extirpation
e)
Keystone Species
2.
a characteristic of organisms that makes it unlikely for them to be infected with or die from diseases
a)
Ecosystem Service
b)
Natural Resource
c)
Disease Resistance
d)
Scavenger
3.
a long-term change in climate patterns on Earth, including changes in average global temperatures and the frequency of severe weather
a)
Climate Change
b)
Per Capita
c)
Over-Exploitation
d)
Emerging Disease
e)
Habitat Degradation
4.
a disease that has recently appeared in human populations, often as a result of new interactions with species in ecosystems
a)
Emerging Disease
b)
Per Capita
c)
Over-Exploitation
d)
Habitat Degradation
e)
Invasive Species
5.
changing or destroying natural ecosystems in ways that disrupt their healthy functioning
a)
Habitat Degradation
b)
Per Capita
c)
Over-Exploitation
d)
Emerging Disease
e)
Invasive Species
6.
a species that has been introduced to a place where it is not naturally found and causes ecological or economic harm
a)
Invasive Species
b)
Per Capita
c)
Over-Exploitation
d)
Emerging Disease
e)
Habitat Degradation
7.
harvesting species from the wild faster than those populations can recover, resulting in population decline
a)
Over-Exploitation
b)
Per Capita
c)
Emerging Disease
d)
Habitat Degradation
e)
Invasive Species
8.
a measure of something per person; for example, per capita income is the ratio of total income to people
a)
Per Capita
b)
Over-Exploitation
c)
Emerging Disease
d)
Habitat Degradation
e)
Invasive Species
9.
a natural process humans rely on that healthy ecosystems provide, such as cleaning water and conserving soil
a)
Ecosystem Service
b)
Natural Resource
c)
Disease Resistance
d)
Scavenger
10.
a material or source of energy found in nature that benefits humans
a)
Ecosystem Service
b)
Natural Resource
c)
Disease Resistance
d)
Scavenger
11.
an organism that eats other organisms that are already dead
a)
Ecosystem Service
b)
Natural Resource
c)
Disease Resistance
d)
Scavenger
12.
when all of the members of a species die and the species no longer exists
a)
Extinction
b)
Biodiversity
c)
Proportion
d)
Niche
e)
Extirpation
13.
when all of the members of a population die and the species no longer exists in that place
a)
Extirpation
b)
Biodiversity
c)
Proportion
d)
Niche
e)
Keystone Species
14.
a species that affects the diversity of an entire ecosystem
a)
Keystone Species
b)
Biodiversity
c)
Proportion
d)
Niche
e)
Extirpation
15.
the ecological role that a species plays in an ecosystem
a)
Niche
b)
Biodiversity
c)
Proportion
d)
Extirpation
e)
Keystone Species
16.
the relationship between a part and a whole
a)
Proportion
b)
Biodiversity
c)
Niche
d)
Extirpation
e)
Keystone Species
17.
Biodiversity refers to the variety of ecosystems within a specific geographic location
a)
True
b)
False
18.
Keystone species are critical to maintaining the structure of an ecosystem and its biodiversity
a)
True
b)
False
19.
Extirpation refers to the complete extinction of a species across the entire planet
a)
True
b)
False
20.
Disease resistance in plants can be enhanced through cross-cutting techniques
a)
True
b)
False
21.
Invasive species often thrive in new ecosystems because they typically have many natural predators
a)
True
b)
False
22.
Watersheds are important for naturally filtering and cleaning water
a)
True
b)
False
23.
Over-exploitation of natural resources typically has no significant impact on the system
a)
True
b)
False
24.
Emerging diseases are often linked to human expansion into previously uninhabited areas
a)
True
b)
False
25.
Climate change only affects temperature and does not influence weather patterns or sea levels
a)
True
b)
False
26.
Pollution in ecosystems is primarily caused by natural processes, not human activities
a)
True
b)
False
27.
Which of the following best defines biodiversity?
a)
The number of ecosystems in a region
b)
The variety of organisms in a particular ecosystem
c)
The amount of sunlight an ecosystem receives
d)
The distribution of water within an ecosystem
28.
Why is a keystone species important to an ecosystem?
a)
It occupies the lowest level in the food chain
b)
It has little effect on the ecosystem
c)
It affects the biodiversity of the entire ecosystem
d)
It is always the most populous species in the ecosystem
29.
Which of the following is an example of habitat degradation?
a)
Introduction of a new predator into the ecosystem
b)
Conversion of forests into agricultural land
c)
Increase in the population of native species
d)
Preservation of natural resources
30.
What is the primary consequences of over-exploitation in an ecosystem?
a)
Increased biodiversity
b)
Rapid recovery of natural resources
c)
Disruption of ecosystem balance
d)
Expansion of habitat areas
31.
Which of the following strategies can help reduce the impact of climate change?
a)
Increasing deforestation efforts
b)
Using more natural resources
c)
Implementing energy-saving practices
d)
Increasing the use of fossil fuels
32.
Invasive species often cause problems in new ecosystems because they...
a)
Always improve the biodiversity of the ecosystem
b)
Usually have many natural predators in the new ecosystem
c)
Can outcompete native species for resources
d)
Help in maintaining the ecosystem's balance
33.
Which of the following is a benefit provided by scavengers in an ecosystem?
a)
They increase the risk of disease in humans
b)
They help in disposing of dead animals, preventing the spread disease
c)
They reduce biodiversity by consuming living plants
d)
They contribute to habitat degradation
34.
How do watersheds contribute to the availability of clean drinking water?
a)
They store large amounts of pollutants
b)
They filter and clean rainwater before it enters rivers
c)
They prevent any interaction between water and land
d)
They increase the need for chemical treatments in water
35.
What is a common challenge when dealing with emerging diseases?
a)
They are easily preventable and pose no major threat
b)
They often arise from well-known and easily identifiable sources
c)
They can be difficult to diagnose and may arise from interactions with wild species
d)
They only occur in small, isolated populations
36.
Which of the following statements about climate change is true?
a)
Climate change has no effect on global sea levels
b)
Climate change results in stable, predictable weather patterns
c)
Climate change includes long-term shifts in temperature and severe weather events
d)
Climate change is only a natural process and not influenced by human activities
37.
Why is biodiversity important in ecosystems?
4 lines
38.
How do humans rely on a healthy ecosystem?
4 lines
39.
How do humans affect coral reefs and other ecosystems?
4 lines
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