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Unit 3 Review
Test Description: Semester review of biodiversity and succession
Instructions: Answer all questions to get your test result.
1) Which adaptation would most iikely be evident in an animal living in a tundra biome?
A
large wide ears with thin tissue
B
thick fat layer that develops quickly
C
long neck to reach food in high branches
D
long legs to escape predators
2) Which of these BEST explains why forest trees are the final stage in succession?
A
trees take longer to mature and would block sunlight for small plants
B
trees are very large and use available nutrients
C
trees have deep roots and soak up groundwater
D
trees have leaves that use all the available air
3) Which of the following is most likely to have a positive effect on biodiversity?
A
replanting trees and other plants in a park
B
increasing people's awareness of pollution
C
pouring oil onto the ground
D
recycling glass, aluminum and plastic
4) Which of the following contributes to the stability in an ecosystem?
A
reduction in biodiversity
B
removal of many populations of organisms
C
increase in biodiversity
D
extinction of a population from the ecosystem
5) A hurricane hits a coastal prairie and destroys the habitat. Years later there is an appearance of small plants. What does this describe?
A
primary succession
B
microhabitat
C
biodiversity
D
secondary succession
6) Which of these is most sustainable?
A
a grassland with small plants and grass
B
a field with no plants, only soil
C
a forest with trees, grasses, plants, and flowers
D
an area near a volcano covered with igneous rock
7) What is the relationship between ecological succession and equilibrium in an ecosystem?
A
succession helps maintain balance
B
they are the same thing
C
succession prevents balance in ecosystems
D
there is no relationship between the two
8) All of the following are examples of events in nature that can lead to secondary succession except
A
earthquake
B
hurricane
C
formation of a swamp or lake
D
flood
9) Which is an example of primary succession?
A
lichen growing on igneous rock near a volcano
B
an area recovering after a hurricane
C
a field transforming into a forest
D
regrowth of a forest after a fire
10) Which of the following statements about biodiversity is true?
A
the amount of biodiversity does not affect an ecosystem
B
more biodiversity means less species in an ecosystem
C
more biodiversity means a better chance for sustainability
D
more biodiversity means less chance for sustainability
*select an answer for all questions
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