Ecology Review
Which of the following is NOT a biotic factor in a prairie dog ecosystem?
A. Grass and other plants that the prairie dog eats
B. Hawks, ferrets and other animals that hunt the prairie dog
C. The soil that provides the prairie dog with a home
D. Worms, fungi and bacteria that live in the soil
What is the correct order of the levels of organization of living things?
A. organism – population – community -- ecosystem
B. ecosystem – population – community -- habitat
C. organism – population – biotic factor - ecosystem
D. organism – succession – community -- ecosystem
A prairie dog, a hawk and a badger are all members of the same
A. niche
B. community
C. species
D. population
Which of the following is NOT an example of limiting factors for populations?
A. time
B. weather
C. space
D. food
Wolves are predators of moose on Isle Royale. If the moose population rises, what do you predict will happen to the wolf population?
A. The wolf population will increase until the moose population begins to decline due to too many predators
B. The wolf population will decrease because they will have to compete with a larger moose population
C. The wolf population will stay the same because they are in a mutualistic relationship with the moose
D. The wolf will go extinct due to overhunting
Although three different bird species all live in the same tree in an area, competition between the birds rarely occurs. The most likely explanation for this lack of competition is that these birds
A. occupy different niches
B. have a limited supply of food
C. eat the same food
D. live in the same part of the tree
The amount of energy transferred from one level to the next in a food web is
A. 5%
B. 10%
C. 50%
D. 90%
The process of evaporation, condensation and precipitation make up the
A. food web
B. carbon and oxygen cycles
C. water cycle
D. nitrogen cycle
“Free” nitrogen is changed into a usable form of nitrogen in the process called
A. primary succession
B. nitrogen fixation
C. condensation
D. legumes
The type of biome that exists in an area is determined by its
A. people
B. climate conditions
C. food webs
D. invasive species
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
The study of how living things interact with each other and with their environment
ecology
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
All the members of one species in a particular area
population
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
The largest population that an area can support
carrying capacity
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
An environment that provides the things the organism needs to live, grow and reproduce
habitat
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
A diagram that shows the amount of energy that moves from one feeding level to another in a food web
Energy pyramid
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
A species that is not native to an ecosystem
Invasive species
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
A close relationship between two species that benefits at least one of the species
symbiosis
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
A community of organisms that live in a particular area along with their non-living surroundings
ecosystem
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive speciesLimiting factors extinction biodiversity
The number of different species in a an area
biodiversity
MatchingPopulation ecology habitat carrying capacity energy pyramid symbiosis ecosystem invasive species extinction biodiversity
The disappearance of all members of a species from Earth
extinction
InteractionsPredation competition mutualism commensalism
parasitism
A lion hunts, attacks, kills and eats a zebra
predation
InteractionsPredation competition mutualism commensalism
parasitism
The seeds of purple loosestrife, an invasive species, migrate to an island and take the space of native plants
competition
InteractionsPredation competition mutualism commensalism
parasitism
Wrasses, a reef fish, clean the mouth and gills of the moray eel to gain its meal
mutualism
InteractionsPredation competition mutualism commensalism
parasitism
Barnacles live on a whale to have a place to live, but they do not take anything from the whale and the whale is not harmed
commensalism
InteractionsPredation competition mutualism commensalism
parasitism
In the rainforest, the strangle fig tree grows around another tree as it absorbs the tree’s nutrients and eventually kills the tree
parasitism
A rocky island appears as ocean waters recede. What type of species would probably appear first on the bare rocks?
Pioneer species, like mosses and lichens, would be the first to appear
A rocky island appears as ocean waters recede. What type of succession does this demonstrate? Why?
Primary succession is demonstrated because the area is starting with bare rock
An old warehouse was torn down. Small weeds and grasses grew on the abandoned land. Over the few years, bushes and tree seedlings began to grow. What will eventually happen to this land over a long period of time?
A forest will eventually grow.
An old warehouse was torn down. Small weeds and grasses grew on the abandoned land. Over the few years, bushes and tree seedlings began to grow. What type of succession does this demonstrate? Why?
Secondary succession is demonstrated because soil is present at the beginning.
Define a food web A food web is overlapping food chains in an ecosystem
Describe a food chain in this food web.
Why do all food chains start with a producer?
Producers can make their own food through photosynthesis
What is the role of mushrooms in this web?
Mushrooms are decomposers.
What would happen if all the hawks died?
The populations of squirrel, shrew, snake and bird would increase.
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