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WorksheetsEcology 1
Total questions: 20
Worksheet time: 11mins
How does interdependence play a role on ecosystems?
When a change occurs in the environment all species in an ecosystem can be affected
An organism can be removed from an ecosystem or die off, and the rest of the ecosystem will still always be able to function as normal
Ecosystems run in a way in which small changes will never have an effect on organisms that appear far removed from the change
B and C
What are the levels of organization of ecology from most broad to most narrow?
Organism, population, community, ecosystem, biosphere
Biosphere, population, ecosystem, community, organism
Biosphere, ecosystem, community, population, organism
Ecosystem, biosphere, population, community, organism
Why might an ecologist use an ecological model?
To understand environmental interactions
To describe an ecological system
To represent components of an ecological system
All of the above
Which of the following correctly describes a population?
All of the the nonliving components of an area
All of the interacting organisms living in an area
All the members of a species that live at one place at one time
All of the organisms and the non living environment found in a particular place
Which of the following is a way an ecological model may be represented?
physically
conceptually
mathematically
A and B
All of the above
What is true about acclimation?
It helps organisms keep their tolerance levels the same
It helps organisms adjust their tolerance to biotic factors
It helps organisms adjust their tolerance through genetic changes to a population over time
It helps organisms adjust their tolerance through genetic changes to a population over time
What statement is true regarding niches of species?
It is the role that a species take on in its environment
It includes the range of conditions an organism can tolerate
It includes the conditions in which an organism can be found
All of the above
What is true about migration?
It allows for an organism to enter a state of reduced activity long term
It allows for an organism to move to a more favorable habitat
It allows for an organism to become regulators instead of conformers in order to escape unfavorable situations
B and C
Which of the following is an example of a biotic factor?
moss
humidity
oxygen concentration
rocks
Which of the following is not an abiotic factor?
sunlight
soil
grass
water
What happens to an organism in conditions outside of its optimal range?
Its performance will increase
Its performance will be reduced
It will survive if the conditions are within its tolerance limits
B and C
Which of the following describes a regulator?
They change as their external environment changes, without changing or controlling their internal conditions
They use energy to control internal conditions
They always have a small optimal range
They cannot tolerate a wide variety of environmental conditions
A salmon species spend early life in rivers, then swim out to sea for growth and maturation. This strategy would be considered
Dormancy
Acclimation
Migration
Tolerance
A species with a broad niche would be considered a
Specialist
Generalist
Adapter
Conformer
Going from one layer of trophic to another layer of trophic, on average, about how much energy gets transferred?
90%
60%
30%
10%
Which of the following is considered a consumer?
Herbivore
Carnivore
Omnivore
All of the above
Consider the following diagram. Which of the following would be found at trophic level 4?
Herbivores
Large carnivores
Small carnivores
Producers
What is biomass
The combined mass of the biotic factors present in an ecosystem
The organic material that has been produced in an ecosystem
The the combined mass of all of the producers present
The process that bacteria uses to create carbohydrates
Decomposers are a type of
Omnivore
Herbivore
Detritivore
Carnivore
How are food chains and food webs different
A food chain shows a single pathway of feeding relationships
A food web shows interrelated food chains in an ecosystem
A food web can show multiple different things an organism may eat
All of the above
