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Ecology Test Review 2
Test Description: Ecology Test Review 2
Instructions: Answer all questions to get your test result.
1) Which of the following is a producer?
A
frog
B
vegetation
C
snake
D
dragonfly
2) Which statement about the flow of energy in this pyramid is most accurate?
A
As energy flows from the bottom towards the top, much of the energy is lost as heat.
B
As energy flows from the top towards the bottom, much of the energy is lost as heat.
C
As energy flows from the bottom towards the top, more energy is added by organisms.
D
As energy flows from the top towards the bottom, more energy is added by organisms.
3) Which of the following is a decomposer in a desert ecosystem?
A
scorpions
B
bacteria
C
snakes
D
tarantulas
4) How may a drought most likely affect an environment?
A
The populations of dragonflies, frogs, & snakes decrease, but cause the vegetation increase.
B
The population of vegetation decrease & decreases in the populations of dragonflies, frogs & snakes.
C
The population of snakes increase, but decreases in populations of frogs, dragonflies & vegetation.
D
The population of vegetation decrease, but it not affect the sizes of the other populations.
5) Assuming all other variables are constant, what happens to a population when death rates exceed birth rates?
A
The population decreases.
B
The population increases.
C
The population remains the same.
D
All of the above.
6) Assuming all other variables are constant, what happens to a population when immigration exceeds emigration?
A
The population decreases.
B
The population remains the same.
C
All of the above.
D
The population increases.
7) Which of the following best describes the influence carrying capacity has on the size of a population?
A
The carrying capacity limits the size of a population.
B
The carrying capacity allows a population to increase exponentially.
C
The carrying capacity increases the size of a population.
D
The carrying capacity causes a population to become extinct.
8) Which of the following best describes the influence of emigration on the size of a population?
A
In general, as emigration from an area decreases, the population of the area increases.
B
In general, as emigration from an area increases, the population of the area decreases.
C
In general, as emigration from an area increases, the population of the area increases.
D
In general, as emigration from an area decreases, the population of the area decreases.
9) Which of the following best describes the relationship between carrying capacity and death rates?
A
As population size approaches the carrying capacity, death rates approach zero.
B
As population size approaches the carrying capacity, death rates begin to decrease.
C
As population size approaches the carrying capacity, death rates begin to increase.
D
As population size approaches the carrying capacity, death rates remain unchanged.
10) Which of the following best identifies the relationship between fleas and dogs?
A
Fleas are predators, and dogs are their prey.
B
Fleas are omnivores, and dogs are carnivores.
C
Fleas are parasites, and dogs are their hosts.
D
Fleas are consumers, and dogs are producers.
*select an answer for all questions
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