Ecology Test Review 2 Question Preview (ID: 12717)
Ecology Test Review 2.
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Which of the following is a producer?
a) snake
b) frog
c) dragonfly
d) vegetation
Which statement about the flow of energy in this pyramid is most accurate?
a) As energy flows from the bottom towards the top, more energy is added by organisms.
b) As energy flows from the bottom towards the top, much of the energy is lost as heat.
c) As energy flows from the top towards the bottom, more energy is added by organisms.
d) As energy flows from the top towards the bottom, much of the energy is lost as heat.
Which of the following is a decomposer in a desert ecosystem?
a) scorpions
b) snakes
c) bacteria
d) tarantulas
How may a drought most likely affect an environment?
a) The population of vegetation decrease, but it not affect the sizes of the other populations.
b) The populations of dragonflies, frogs, & snakes decrease, but cause the vegetation increase.
c) The population of snakes increase, but decreases in populations of frogs, dragonflies & vegetation.
d) The population of vegetation decrease & decreases in the populations of dragonflies, frogs & snakes.
Assuming all other variables are constant, what happens to a population when death rates exceed birth rates?
a) The population increases.
b) The population decreases.
c) The population remains the same.
d) All of the above.
Assuming all other variables are constant, what happens to a population when immigration exceeds emigration?
a) The population increases.
b) The population decreases.
c) The population remains the same.
d) All of the above.
Which of the following best describes the influence carrying capacity has on the size of a population?
a) The carrying capacity increases the size of a population.
b) The carrying capacity causes a population to become extinct.
c) The carrying capacity limits the size of a population.
d) The carrying capacity allows a population to increase exponentially.
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 decreases, 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 increases, the population of the area decreases.
Which of the following best describes the relationship between carrying capacity and death rates?
a) As population size approaches the carrying capacity, death rates begin to decrease.
b) As population size approaches the carrying capacity, death rates begin to increase.
c) As population size approaches the carrying capacity, death rates approach zero.
d) As population size approaches the carrying capacity, death rates remain unchanged.
Which of the following best identifies the relationship between fleas and dogs?
a) Fleas are predators, and dogs are their prey.
b) Fleas are parasites, and dogs are their hosts.
c) Fleas are consumers, and dogs are producers.
d) Fleas are omnivores, and dogs are carnivores.
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