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