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WorksheetsEcology Practice Test: HEM Biology
Total questions: 26
Worksheet time: 13mins
The eastern coast of the United States and most of Europe is characterized by
Grasslands
Taiga
Temperate deciduous forest
Coniferous forest
In the marine biome, organisms experience radical changes in their environment each day in the
Intertidal zone
Deep-sea zone
Neritic zone
Open-sea zone
The desert in the southwestern United States is
Hot and barren
Hot with sparse but even rain
A seasonal desert
Cold desert
An abiotic factor that varies less in marine biomes than in land biomes is
Light intensity
Dissolved oxygen
Temperature
Any environment that has a characteristic climax community is a (an)
Biome
Ecosystem
Biosphere
The two terms that are paired together correctly are
Taiga - mosses and lichens
Tundra - permafrost
Temperate deciduous forest - pine trees
Grasslands - migrating birds
A group of organisms that belong to the same species and live in a given area is a (an)
Population
Community
Ecosystem
Biome
When the birthrate equals the death rate, the population
Reaches zero growth
Gradually increasing
Gradually decreasing
Becomes unstable
In most natural situations, predator-prey relationships
Cannot co-exist
Destroy one another
Have a cyclical pattern that repeats
All of the above
None of the above
Each of the following is a density-dependent limiting factor except
Parasitism
Predators
Weather
Crowding
Which is not a characteristic of K-strategy?
Lives a long life
Gives no care to offspring
Has few offspring
Long development to maturity
Among the following, the term that includes the others is
Commensalism
Mutualism
Symbiosis
Parasitism
Density-independent limiting factors include
Parasites
Volcano blast
Crowding
Birthrates
In many ways, parasites act like
Commensuals
Predators
Hosts
Mutualistic symbionts
As predators become more numerous, the last of the following to occur is that the
Predator population decrease
Predator begins to starve
Prey population decreases
Predators eat more prey than they are born
Biological magnification...
Increases the concentration of poisons in animals higher in the food chain
Is not a concern for people
Can occur because of the pesticides
Does none of the above
Both "Increases the concentration of poisons in animals higher in the food chain" and "Can occur because of the pesticides"
SO2 in the air can cause rain to become
More pure
Healthier in plants
More acidic
None of these
Which of the following is biodegradable?
Glass
Orange peel
DDT
Mercury
Sounds levels due to increases freeway traffic, air traffic, and stereos are considered pollution.
True
False
Which of the following ways causes water to be polluted?
Sewage
Thermal
Chemicals
All of these
None of these
Can occur because of the pesticides
Is exactly 1.5 million
Has increased over the last 2,000 years
Is smaller than the number that occurred during the time of the dinosaurs
Is decreasing rapidly
An ecosystem includes
All members of one species
All the living and nonliving factors in an environment
All parts of earth where life exists
All members of a species in an area
Abiotic factors in an ecosystem can include
Plants
Animals
Sunlight
Microorganisms
An animal could migrate to avoid
A hurricane
Cold temperatures in winter
An extreme cold snap
A volcanic eruption
A clumped distribution
Occurs when individuals are evenly spaced
May occur when resources are concentrated
Occurs only because of social interactions between individuals
Occurs only among plants
A clumped distribution
Occurs when individuals are evenly spaced
May occur when resources are concentrated
Occurs only because of social interactions between individuals
Occurs only among plants
