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Unit 6 Review
Test Description: Review of biodiversity and succession
Instructions: Answer all questions to get your test result.
1) What is the relationship between ecological succession and equilibrium in an ecosystem?
A
Ecological succession and equilibrium are the same thing.
B
There is no relationship between ecological succession and equilibrium.
C
Ecological succession prevents ecosystems from ever reaching equilibrium.
D
Ecological succession helps maintain equilibrium in an ecosystem.
2) Which of the following situations contributes to stability in an ecosystem?
A
extinction of a population from the ecosystem
B
increase in biodiversity
C
reduction in biodiversity
D
removal of many populations of organisms
3) A species that is responsible for primary succession in an ecosystem is MOST likely able to-
A
migrate in the winter
B
carry out photosynthesis
C
survive any predator
D
live at high altitudes
4) Which plant would appear first in secondary succession?
A
native trees
B
shrubs
C
flowering plants
D
grasses
5) What is the MOST serious threat to biodiversity?
A
climate change
B
loss of natural habitat
C
global warming
D
pollution
6) The more diverse an ecosystem is-
A
the more stable it is
B
the more similar the species will be
C
the more threatened its populations are
D
the fewer varieites of species are present
7) After a hurricane hits the coast what will happen next?
A
a microhabitat
B
biodiversity
C
primary succession
D
secondary succession
8) What is the primary limiting factor in the desert?
A
food source
B
moisture
C
elevation
D
space
9) To find the area of a leaf, which tool would be used?
A
ruler
B
hand lens
C
balance
D
microscope
10) Which would be a sign of fertile soil?
A
Chunks of rocks
B
Small pieces of rock
C
Large mass of earthworms
D
Small mass of earthworms
*select an answer for all questions
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