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Ecology2
Test Description: Ecology review for regents
Instructions: Answer all questions to get your test result.
1) Which statement best describes energy in this food web?
A
The energy content of level B depends on the energy content of level C.
B
The energy content of level A depends on The energy content of level A depends on
C
The energy content of level C is greater than the energy content of level A.
D
The energy content of level B is transferred to level A.
2) What impact do the amounts of available energy,water, and oxygen have on an ecosystem?
A
They act as limiting factors
B
They control environmental temperature.
C
They are used as nutrients.
D
They recycle the residue of dead organisms.
3) When habitats are destroyed, there are usually fewer niches for animals and plants. This action would most likely not lead to a change in the amount of
A
interaction between species
B
solar radiation reaching the area
C
biodiversity
D
competition
4) The removal of nearly all the predators from an ecosystem would most likely result in
A
an increase in the number of herbivores
B
an increase in the number of carnivore species
C
a decrease in new predators migrating into the ecosystem
D
a decrease in the size of decomposers
5) Ecosystems will have a greater chance of maintaining equilibrium over a long period of time if they have
A
predators eliminated from the food chains
B
organisms imported by humans from other environments
C
a diversity of organisms
D
a sudden change in climate
6) Carnivores would most likely be located in
A
top level
B
bottom level
C
all levels
D
middle level
7) Which action illustrates an increased understanding and concern by humans for ecological interrelationships?
A
removing natural resources at a rate equal to the needs of the population
B
eliminating pollution standards for industries that promote technology
C
implementing laws to regulate the number of animals hunted and killed each year
D
importing organisms in order to stabilize existing ecosystems
8) One irreversible effect of both deforestation and water pollution on the environment is the
A
depletion of atmospheric carbon dioxide levels
B
thinning of the ozone shield
C
extinction of species
D
increase in renewable resources
9) Which statement describes a situation that leads to stability within an ecosystem?
A
Interactions between biotic and abiotic components regulate carbon dioxide and water levels.
B
Organisms provide all the necessary energy for the maintenance of this ecosystem.
C
Animals provide the oxygen used by plants, and plants provide the nitrogen needed by animals.
D
Carbon dioxide and water are released only by abiotic sources in the ecosystem.
10) Which condition would most likely upset the stability of an ecosystem?
A
a greater mass of animals than plants
B
green plants incorporating sunlight into organic compounds
C
a cycling of elements between organisms and the environment
D
energy constantly entering the environment
*select an answer for all questions
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