16863719
Descripción
Test por Jessica Dewald, actualizado hace 9 meses
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Creado por Jessica Dewald
hace casi 6 años
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Pregunta 1
Pregunta
What do we call the movement of organisms into a given area from another area?
Respuesta
-
population shift
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immigration
-
emigration
-
carrying capacity
Pregunta 2
Pregunta
What plant species in the figure below represents a pioneer species if the area is undergoing primary succession?
Respuesta
-
shrubs
-
grasses
-
lichens
-
deciduous trees
-
coniferous trees
Pregunta 3
Pregunta
Which of the following is a density-independent limiting factor?
Respuesta
-
seasonal cycles
-
competition
-
crowding
-
disease
Pregunta 4
Pregunta
Which part of the graph represents exponential growth for the population?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 5
Pregunta
The graph represent _____ growth, and rabbits are ___ reproductive strategists.
Respuesta
-
logistic, R
-
exponential, R
-
logistic, K
-
exponential, K
Pregunta 6
Pregunta
If the humans eliminate a predator, how would this initially affect the number of prey animals?
Respuesta
-
The number would rapidly decrease
-
The number would increase
-
The number would remain constant
-
The number would slowly decrease
Pregunta 7
Pregunta
Which of the following in not one of the factors that plays a role in population growth rate?
Respuesta
-
population density
-
immigration
-
death rate
-
emigration
Pregunta 8
Pregunta
Which statement best describes the fruit fly population in the part of the curve labeled X in the graph shown in the figure below.
Respuesta
-
The fruit fly population can no longer mate and produce fertile offspring
-
The fruit fly population has reached the number of organisms that habitat can support
-
The fruit fly population is no longer able to adapt to the changing environmental conditions
-
The fruit fly population has an average lifespan of 36 days
Pregunta 9
Pregunta
Which meadow has the greatest biodiversity?
Respuesta
-
Meadow A
-
Meadow B
-
Meadow C
-
Not enough information
Pregunta 10
Pregunta
The human population experienced exponential growth after....
Respuesta
-
the industrial revolution began
-
the bubonic plague occurred
-
agriculture began
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plowing and irrigation began
Pregunta 11
Pregunta
What is one difference between primary and secondary succession?
Respuesta
-
secondary succession begins on soil, and primary succession begins on bare rock
-
Primary succession modifies the environment, and secondary succession does not
-
Primary succession is slow, and secondary succession is rapid
-
secondary succession begins with lichens, and primary succession begins with trees
Pregunta 12
Pregunta
When individuals in a population reproduce at a constant rate, it is called...
Respuesta
-
exponential growth
-
growth density
-
logistic growth
-
multiple growth
Pregunta 13
Pregunta
Why does the white-tailed deer population drop when carrying capacity is exceeded?
Respuesta
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resources are too low to support the population
-
competition by other animals is greatly reduced
-
the height of edible plants exceeds the height of the deer
-
weather changes reduce the deer population
Pregunta 14
Pregunta
The graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?
Respuesta
-
The number of coyotes will be greater than the number of rabbits within a ten-year period
-
The number of rabbits will decrease during summer months
-
The rabbit population obtains energy by consuming young plants
-
The coyote population is influenced by the available number of rabbits
Pregunta 15
Pregunta
A herd of deer lives in an area of Northwest Ohio between two major interstate highways. As the population continues to grow, several deer die from starvation. This example in which type of limiting factor?
Respuesta
-
density-independent
-
density-dependent
-
abiotic factor
-
none of the above
Pregunta 16
Pregunta
When organisms move out of the population, this is known as ....
Respuesta
-
emigration
-
immigration
-
abandonment
-
succession
Pregunta 17
Pregunta
From the graph, determine which time period are birth and death rate equal?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 18
Pregunta
There are 150 Saguro cactus plants per square kilometer in certain area of Arizona desert. To which population characteristic does this information refer?
Respuesta
-
geographic distribution
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growth rate
-
population density
-
age structure
Pregunta 19
Pregunta
The graph shows the interactions of two populations. Population A is made up of living animals. The members of population B feed on these animals. The members of population B are most likely...
Respuesta
-
autotrophs
-
prey
-
parasites
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predators
Pregunta 20
Pregunta
An undisturbed squirrel population grows until its carrying capacity is reached. Which of the graphs below best resembles this squirrel population?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 21
Pregunta
The graph below shows the interaction of the wolf and moose populations on Isle Royale. If the moose population continues to decrease, the wolves' food supply will decrease. What will most likely happen to the wolf population as a result?
Respuesta
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decreases
-
increase slightly
-
remain the same
-
increase greatly
Pregunta 22
Pregunta
What must occur in a population in order for it to grow?
Respuesta
-
the birth rate and death rate remain the same
-
the birth rate becomes lower than the death rate
-
the birth rate stays the same and the death rate increases
-
the birth rate becomes higher than the death rate
Pregunta 23
Pregunta
Which of the following has caused the human population growth rate to increase?
Respuesta
-
a shift towards an older population
-
famine and drought
-
the frequency and severity of common diseases
-
improvements in nutrition, medicine, and sanitation
Pregunta 24
Pregunta
The table shows how several different populations have changed over a one year time span. Look at each population and determine which population has had an overall increase?
Respuesta
-
population A
-
population B
-
population C
-
population D
Pregunta 25
Pregunta
On what trophic level would you find organisms that use the sun's energy directly to make their own food?
Respuesta
-
1
-
2
-
3
-
4
Pregunta 26
Pregunta
The ultimate source of energy for all organisms in life is:
Respuesta
-
water
-
oxygen
-
nitrogen
-
the sun
Pregunta 27
Pregunta
An animal that only eats the flesh of another animal is called a:
Respuesta
-
producer
-
herbivore
-
carnivore
-
omnivore
Pregunta 28
Pregunta
In the following food chain, which organism is the secondary consumer? grass ------> rabbit -------> snake ------> hawk
Respuesta
-
grass
-
rabbit
-
snake
-
hawk
Pregunta 29
Pregunta
In the above food chain, the snake is an example of a:
Respuesta
-
producer
-
primary consumer
-
secondary consumer
-
tertiary consumer
-
quaternary consumer
Pregunta 30
Pregunta
Which of the following organisms is an autotroph?
Respuesta
-
algae
-
bear
-
cheetah
-
fish
Pregunta 31
Respuesta
-
competition
-
mutualism
-
parasitism
-
predator/prey
Pregunta 32
Pregunta
In the terrestrial food web above, what would be the effect of a farmer introducing a rat poison into the ecosystem that is toxic to rats and mice?
Respuesta
-
the population of fox would decrease
-
the population of grasshoppers would decrease
-
the population of hawks would increase
-
the population of rabbits would decrease
Pregunta 33
Pregunta
Which of the following is an abiotic factor in an ecosystem?
Respuesta
-
bird
-
tree
-
rock
-
deer
Pregunta 34
Pregunta
Sea anemones contain a venom that is used to sting and paralyze their prey. The clownfish contains an enzyme in their scales that makes them immune to the venom. This allows them to freely live in the sea anemone without being harmed providing the clownfish with protection. This is an example of what type of relationship?
Respuesta
-
predator-prey
-
mutualism
-
commensalism
-
parasitism
Pregunta 35
Pregunta
Lichen is a symbiotic decomposer that attaches itself to trees and slowly breaks them down. They obtain nutrients from the tree, allowing them to survive and reproduce while the tree slowly dies. What type of relationship is this?
Respuesta
-
predator-prey
-
mutualism
-
parasitism
-
competition
Pregunta 36
Pregunta
Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called:
Respuesta
-
producers
-
consumers
-
decomposers
-
scavengers
Pregunta 37
Pregunta
The amount of energy that is passed from one organism to the next in a food chain is:
Respuesta
-
5%
-
10%
-
15%
-
20%
Pregunta 38
Pregunta
In an energy pyramid, the bottom level represents:
Respuesta
-
consumers
-
producers
-
scavangers
-
decomposer
Pregunta 39
Pregunta
In an energy pyramid, the lowest level has:
Respuesta
-
less energy than the top level
-
less energy than the second level
-
more energy than the top level
-
the same amount of energy is available to a consumer
Pregunta 40
Pregunta
Decomposers are important to ecosystems because they:
Respuesta
-
are at the highest level of the energy pyramid
-
change simple compounds into more complex ones
-
convert light energy into sugars through photosynthesis
-
make nutrients available for producers to use
Pregunta 41
Pregunta
All the following are examples of limiting factors for a population EXCEPT:
Respuesta
-
space
-
food
-
time
-
weather
Pregunta 42
Pregunta
As populations grow individuals tend to compete for
Respuesta
-
resources
-
stress
-
independence
Pregunta 43
Pregunta
An animal that eats only plants is a:
Respuesta
-
primary consumer
-
secondary consumer
-
tertiary consumer
-
primary producer
Pregunta 44
Pregunta
Which of the following is an example of an ecosystem?
Respuesta
-
air, water, grass, badgers
-
air, water, sunlight, and soil
-
hawks, mouse, badgers, and eagles
-
grass, trees, bushes, and flowers
Pregunta 45
Pregunta
The plant receives 3456.8 kcal of energy from the sun. How much energy will the snake end up with? [blank_start]3.4568[blank_end] kcal of energy.
Respuesta
-
3.4568
Pregunta 46
Pregunta
Biomagnification is when toxins, such as mercury and DDT, increase in the amount present in an organism as you move up in the food chain/web.
Respuesta
-
true
-
fasle
Pregunta 47
Pregunta
Which organism in the food chain would contain the highest levels of DDT poisoning?
Respuesta
-
snake
-
cricket
-
plant
-
owl
Pregunta 48
Pregunta
Two closely related species of birds live in the same tree. Species A feeds on ants and termites, while species B feeds on caterpillars. The two species coexist successfully because
Respuesta
-
each occupies a different niche
-
they interbreed
-
they use different methods of reproduction
-
birds compete for food
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