Test
Ecology Practice Test
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (48)
1What do we call the movement of organisms into a given area from another area?
- Apopulation shift
- Bimmigration
- Cemigration
- Dcarrying capacity
2What plant species in the figure below represents a pioneer species if the area is undergoing primary succession?
- Ashrubs
- Bgrasses
- Clichens
- Ddeciduous trees
- Econiferous trees
3Which of the following is a density-independent limiting factor?
- Aseasonal cycles
- Bcompetition
- Ccrowding
- Ddisease
4Which part of the graph represents exponential growth for the population?
- AA
- BB
- CC
- DD
5The graph represent _____ growth, and rabbits are ___ reproductive strategists.
- Alogistic, R
- Bexponential, R
- Clogistic, K
- Dexponential, K
6If the humans eliminate a predator, how would this initially affect the number of prey animals?
- AThe number would rapidly decrease
- BThe number would increase
- CThe number would remain constant
- DThe number would slowly decrease
7Which of the following in not one of the factors that plays a role in population growth rate?
- Apopulation density
- Bimmigration
- Cdeath rate
- Demigration
8Which statement best describes the fruit fly population in the part of the curve labeled X in the graph shown in the figure below.
- AThe fruit fly population can no longer mate and produce fertile offspring
- BThe fruit fly population has reached the number of organisms that habitat can support
- CThe fruit fly population is no longer able to adapt to the changing environmental conditions
- DThe fruit fly population has an average lifespan of 36 days
9Which meadow has the greatest biodiversity?
- AMeadow A
- BMeadow B
- CMeadow C
- DNot enough information
10The human population experienced exponential growth after....
- Athe industrial revolution began
- Bthe bubonic plague occurred
- Cagriculture began
- Dplowing and irrigation began
11What is one difference between primary and secondary succession?
- Asecondary succession begins on soil, and primary succession begins on bare rock
- BPrimary succession modifies the environment, and secondary succession does not
- CPrimary succession is slow, and secondary succession is rapid
- Dsecondary succession begins with lichens, and primary succession begins with trees
12When individuals in a population reproduce at a constant rate, it is called...
- Aexponential growth
- Bgrowth density
- Clogistic growth
- Dmultiple growth
13Why does the white-tailed deer population drop when carrying capacity is exceeded?
- Aresources are too low to support the population
- Bcompetition by other animals is greatly reduced
- Cthe height of edible plants exceeds the height of the deer
- Dweather changes reduce the deer population
14The graph shows the average number of rabbits and coyotes in an area over time. Which conclusion is best supported by these data?
- AThe number of coyotes will be greater than the number of rabbits within a ten-year period
- BThe number of rabbits will decrease during summer months
- CThe rabbit population obtains energy by consuming young plants
- DThe coyote population is influenced by the available number of rabbits
15A 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?
- Adensity-independent
- Bdensity-dependent
- Cabiotic factor
- Dnone of the above
16When organisms move out of the population, this is known as ....
- Aemigration
- Bimmigration
- Cabandonment
- Dsuccession
17From the graph, determine which time period are birth and death rate equal?
- AA
- BB
- CC
- DD
18There are 150 Saguro cactus plants per square kilometer in certain area of Arizona desert. To which population characteristic does this information refer?
- Ageographic distribution
- Bgrowth rate
- Cpopulation density
- Dage structure
19The 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...
- Aautotrophs
- Bprey
- Cparasites
- Dpredators
20An undisturbed squirrel population grows until its carrying capacity is reached. Which of the graphs below best resembles this squirrel population?
- AA
- BB
- CC
- DD
21The 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?
- Adecreases
- Bincrease slightly
- Cremain the same
- Dincrease greatly
22What must occur in a population in order for it to grow?
- Athe birth rate and death rate remain the same
- Bthe birth rate becomes lower than the death rate
- Cthe birth rate stays the same and the death rate increases
- Dthe birth rate becomes higher than the death rate
23Which of the following has caused the human population growth rate to increase?
- Aa shift towards an older population
- Bfamine and drought
- Cthe frequency and severity of common diseases
- Dimprovements in nutrition, medicine, and sanitation
24The 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?
- Apopulation A
- Bpopulation B
- Cpopulation C
- Dpopulation D
25On what trophic level would you find organisms that use the sun's energy directly to make their own food?
- A1
- B2
- C3
- D4
26The ultimate source of energy for all organisms in life is:
- Awater
- Boxygen
- Cnitrogen
- Dthe sun
27An animal that only eats the flesh of another animal is called a:
- Aproducer
- Bherbivore
- Ccarnivore
- Domnivore
28In the following food chain, which organism is the secondary consumer? grass ------> rabbit -------> snake ------> hawk
- Agrass
- Brabbit
- Csnake
- Dhawk
29In the above food chain, the snake is an example of a:
- Aproducer
- Bprimary consumer
- Csecondary consumer
- Dtertiary consumer
- Equaternary consumer
30Which of the following organisms is an autotroph?
- Aalgae
- Bbear
- Ccheetah
- Dfish
31The image represents what type of relationship?
- Acompetition
- Bmutualism
- Cparasitism
- Dpredator/prey
32In 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?
- Athe population of fox would decrease
- Bthe population of grasshoppers would decrease
- Cthe population of hawks would increase
- Dthe population of rabbits would decrease
33Which of the following is an abiotic factor in an ecosystem?
- Abird
- Btree
- Crock
- Ddeer
34Sea 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?
- Apredator-prey
- Bmutualism
- Ccommensalism
- Dparasitism
35Lichen 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?
- Apredator-prey
- Bmutualism
- Cparasitism
- Dcompetition
36Mushrooms and other fungi are responsible for breaking down dead organic matter. In the ecosystem, they are called:
- Aproducers
- Bconsumers
- Cdecomposers
- Dscavengers
37The amount of energy that is passed from one organism to the next in a food chain is:
- A5%
- B10%
- C15%
- D20%
38In an energy pyramid, the bottom level represents:
- Aconsumers
- Bproducers
- Cscavangers
- Ddecomposer
39In an energy pyramid, the lowest level has:
- Aless energy than the top level
- Bless energy than the second level
- Cmore energy than the top level
- Dthe same amount of energy is available to a consumer
40Decomposers are important to ecosystems because they:
- Aare at the highest level of the energy pyramid
- Bchange simple compounds into more complex ones
- Cconvert light energy into sugars through photosynthesis
- Dmake nutrients available for producers to use
41All the following are examples of limiting factors for a population EXCEPT:
- Aspace
- Bfood
- Ctime
- Dweather
42As populations grow individuals tend to compete for
- Aresources
- Bstress
- Cindependence
43An animal that eats only plants is a:
- Aprimary consumer
- Bsecondary consumer
- Ctertiary consumer
- Dprimary producer
44Which of the following is an example of an ecosystem?
- Aair, water, grass, badgers
- Bair, water, sunlight, and soil
- Chawks, mouse, badgers, and eagles
- Dgrass, trees, bushes, and flowers
45The 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.
- A3.4568
46Biomagnification 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.
- Atrue
- Bfasle
47Which organism in the food chain would contain the highest levels of DDT poisoning?
- Asnake
- Bcricket
- Cplant
- Dowl
48Two 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
- Aeach occupies a different niche
- Bthey interbreed
- Cthey use different methods of reproduction
- Dbirds compete for food
Información
- Descripción
- 9th grade Biology Test sobre Ecology Practice Test, creado por Jessica Dewald el 17/02/2019.
- Autor
- Jessica Dewald
- Idioma
- English
- Visitas
- 638
- Historial
- Creado el 17 feb 2019 · actualizado el 27 oct 2025
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