BIO 202 EXAM 1 REVIEWED 2026
QUESTIONS WITH CORRECT ANSWERS
In contrast to bioremediation, which is a strategy for _____, biological
augmentation _____ a degraded ecosystem.
a) replacing extirpated species... removes man-created pollutants and toxins from
b) using organisms to add essential materials ... removes harmful substances
from
c) eradicating a crippling disease in a keystone species...involves planting fruit-
and grain-bearing crops to provide more forage in
d) removing harmful substances...uses organisms to add essential materials to
e) adding new species to control problem species...adds fertilizer to nutrient-poor
soils in
d) removing harmful substances...uses organisms to add essential materials to
How can biodiversity affect the way we decontaminate industrial sites?
I) Bacteria have been found to be able to detoxify certain chemicals; perhaps
there are more.
II) Trees produce sawdust, which can be used to soak up chemicals.
III) Species evolving in contaminated areas could adapt and detoxify the area.
only I
The first step in ecosystem restoration is to _____.
a) remove competitive invasive species
b) restore the physical structure
c)remove toxic pollutants
d) restore native species that have been extirpated due to disturbance
b) restore the physical structure
The goal of restoration ecology is to _____.
a) prevent further degradation by protecting an area with park status
b) replace a ruined ecosystem with a more suitable ecosystem for that area
c) return degraded ecosystems to a more natural state
d) manage competition between species in human-altered ecosystems
c) return degraded ecosystems to a more natural state
The discipline that applies ecological principles to returning degraded
ecosystems to a more natural state is known as _____.
a) landscape ecology
b) resource conservation
c) restoration ecology
d) conservation ecology
c) restoration ecology
Which of the following would be considered an example of bioremediation?
a) using a bulldozer to regrade a strip mine
b) adding seeds of a chromium-accumulating plant to soil contaminated by
chromium
c) dredging a river bottom to remove contaminated sediments
, d) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase
nitrogen availability
d) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase
availability
Which process is not a natural threat to biodiversity?
a) Climate change.
b) Overhunting.
c) Habitat alteration.
d) Extinction.
b) overhunting
How does the rate of species extinctions now compare with those evidenced in
the fossil record?
a) They have remained the same.
b) It is not possible to determine the rate of species extinctions in the fossil
record.
c) They have increased dramatically.
d) They have decreased dramatically.
c) they have increased dramatically
Which process results in habitat destruction?
a) Pollution.
b) Introduction of invasive species.
c) Overhunting.
d) Damming rivers.
d) Damming rivers
True or false? Biologists studied the effects of forest fragmentation by
calculating the difference between the amount of plant biomass in the edges of
forest fragments and the interiors of unfragmented forest.
a) True
b) False
a) True
Which size forest fragment would be most affected by habitat fragmentation over
a given period of time?
a) 10 hectares.
b) 1 hectare.
c) 100 hectares.
d) 1000 hectares.
b) 1 hectare
Which of the following statements about the effects of forest fragmentation on
plant biomass and species diversity is true?
a) The loss of plant biomass correlates mostly with the death of understory
plants.
b) Small forest fragments lose their species diversity at the same rate as large
forest fragments.
c) Large forest fragments (>1000 hectares) are not affected by edge effects and
their species diversity is expected to be stable over a long period of time.
QUESTIONS WITH CORRECT ANSWERS
In contrast to bioremediation, which is a strategy for _____, biological
augmentation _____ a degraded ecosystem.
a) replacing extirpated species... removes man-created pollutants and toxins from
b) using organisms to add essential materials ... removes harmful substances
from
c) eradicating a crippling disease in a keystone species...involves planting fruit-
and grain-bearing crops to provide more forage in
d) removing harmful substances...uses organisms to add essential materials to
e) adding new species to control problem species...adds fertilizer to nutrient-poor
soils in
d) removing harmful substances...uses organisms to add essential materials to
How can biodiversity affect the way we decontaminate industrial sites?
I) Bacteria have been found to be able to detoxify certain chemicals; perhaps
there are more.
II) Trees produce sawdust, which can be used to soak up chemicals.
III) Species evolving in contaminated areas could adapt and detoxify the area.
only I
The first step in ecosystem restoration is to _____.
a) remove competitive invasive species
b) restore the physical structure
c)remove toxic pollutants
d) restore native species that have been extirpated due to disturbance
b) restore the physical structure
The goal of restoration ecology is to _____.
a) prevent further degradation by protecting an area with park status
b) replace a ruined ecosystem with a more suitable ecosystem for that area
c) return degraded ecosystems to a more natural state
d) manage competition between species in human-altered ecosystems
c) return degraded ecosystems to a more natural state
The discipline that applies ecological principles to returning degraded
ecosystems to a more natural state is known as _____.
a) landscape ecology
b) resource conservation
c) restoration ecology
d) conservation ecology
c) restoration ecology
Which of the following would be considered an example of bioremediation?
a) using a bulldozer to regrade a strip mine
b) adding seeds of a chromium-accumulating plant to soil contaminated by
chromium
c) dredging a river bottom to remove contaminated sediments
, d) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase
nitrogen availability
d) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase
availability
Which process is not a natural threat to biodiversity?
a) Climate change.
b) Overhunting.
c) Habitat alteration.
d) Extinction.
b) overhunting
How does the rate of species extinctions now compare with those evidenced in
the fossil record?
a) They have remained the same.
b) It is not possible to determine the rate of species extinctions in the fossil
record.
c) They have increased dramatically.
d) They have decreased dramatically.
c) they have increased dramatically
Which process results in habitat destruction?
a) Pollution.
b) Introduction of invasive species.
c) Overhunting.
d) Damming rivers.
d) Damming rivers
True or false? Biologists studied the effects of forest fragmentation by
calculating the difference between the amount of plant biomass in the edges of
forest fragments and the interiors of unfragmented forest.
a) True
b) False
a) True
Which size forest fragment would be most affected by habitat fragmentation over
a given period of time?
a) 10 hectares.
b) 1 hectare.
c) 100 hectares.
d) 1000 hectares.
b) 1 hectare
Which of the following statements about the effects of forest fragmentation on
plant biomass and species diversity is true?
a) The loss of plant biomass correlates mostly with the death of understory
plants.
b) Small forest fragments lose their species diversity at the same rate as large
forest fragments.
c) Large forest fragments (>1000 hectares) are not affected by edge effects and
their species diversity is expected to be stable over a long period of time.
