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Biodiversity, Disturbance, And Succession
Test Description: Review of biodiversity, disturbance, and succession
Instructions: Answer all questions to get your test result.
1) True or False: Biodiversity is the total number of organisms present in an ecosystem.
A
False
B
True
2) Ecosystem A has 4 individuals and 3 species. Ecosystem B has 6 individuals and 2 species. Which has a higher biodiversity?
A
Ecosystem B
B
Ecosystem A
3) A coastal ecosystem is destroyed by a hurricane. Despite this, the ecosystem recovers quickly. This ecosystem is very
A
unhealthy
B
stable
C
unstable
D
resilient
4) True or False: Biodiversity decreases an ecosystem's resilience.
A
False
B
True
5) A disturbance will:
A
only increase available resources
B
only alter available resources
C
remove species from an area and alter available resources
D
only remove species from an area
6) True or False: A disturbance to one part of an ecosystem results in changes all parts of an ecosystem.
A
True
B
False
7) True or False: All disturbances are bad
A
False
B
True
8) During primary succession, lichens are often the first to grow. This makes lichens a
A
consumer
B
primary species
C
pioneer species
D
climax species
9) True or False: Primary succession occurs where no life or soil are present.
A
True
B
False
10) A climax community:
A
is only composed of consumers.
B
is the final stage of succession.
C
is composed of lichens and mosses.
D
exists in secondary succession but not primary succession.
11) A flood kills all the organisms in a meadow but leaves behind a small layer of soil. The ecological succession that occurs in this meadow would be
A
Primary
B
Secondary
C
Tertiary
12) Why would fungi and bacteria be important organisms to have during succession?
A
They decrease the biodiversity of an area.
B
They are decomposers and help to build healthy soil.
C
They are producers who create food for consumers.
D
All of these.
*select an answer for all questions
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