Intro To Ecology: Question Preview (ID: 25469)

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Which of the following is not true of an organism's tolerance for an environmental variable?
a) Its performace is usually best at intermediate values
b) Its performance can be illustrated with a tolerance curve
c) Its tolerance levels cannot vary over the organisms life
d) Tolerance levels can change through acclimation

Which of the following is not a resource needed by animals?
a) water
b) food
c) carbon dioxide
d) oxygen

An animal could migrate to avoid
a) a hurricane
b) cold temperatures in winter
c) an extreme cold snap
d) a volcanic eruption

A species' fundamental niche
a) cannot be larger than its realized niche
b) changes in response to predators or competitors
c) can be larger or smaller than its realized niche
d) is always as large as or larger than its realized niche

Abiotic factors in an ecosystem can include
a) plants
b) animals
c) sunlight
d) microorganisms

Which of the following is not true of models?
a) they are simplified systems that mimic the natural world
b) they can be tested by comparison with real situations
c) they help scientist make predictions
d) they exactly duplicate reality

An ecosystem includes
a) all the members of one species
b) all the living and nonliving factors in an environment
c) all members of a species in the same area
d) all parts of Earth where life exists

Which of the following is not one of the five main levels of organization within ecology?
a) biosphere
b) ecosystem
c) community
d) atom

The number of species on Earth
a) is exactly 1.5 million
b) has increased over the last 2000 years
c) is smaller than the number that occurred during the time of the dinosaurs
d) is decreasing rapidly

The thinning of the ozone layer is caused by
a) CFCs
b) carbon dioxide
c) oxygen gas
d) carbon monoxide

Where an organism lives.
a) community
b) ecology
c) habitat
d) population

Organisms interacting in a specific area
a) Community
b) Ecology
c) Poplulation
d) Habitat

Global warming is
a) the warming of the atmosphere caused by heat trapped by excess greenhouse gases
b) the warming of the atmosphere due an increase in solar activity
c) the warming of the atmosphere cause by heat radiation

The mechanism that insulates the Earth from the deep freeze of space
a) global warming
b) ozone layer
c) greenhouse effect
d) atmospheric garden

Organisms that control their internal conditions by using energy are called
a) conformers
b) recruiters
c) regulators
d) dormants

The movement or an organisms to a more favorable habitat is called
a) migration
b) dormancy
c) acclimation
d) conformers

People that live in warmer climates tolerate heat more easily than individuals in colder climates, but individuals from cold climates are exposed to the warm are for a length of time, they gain the ability to tolerate it better. This is an example of
a) adaptation
b) regulation
c) conformity
d) acclimation

A species' way of life or the role it plays in the environment is called its
a) acclimation
b) habitat
c) ecosystem
d) niche

A generalist
a) can tolerate a large range of conditions and use a variety of resources
b) have narrow niches
c) can enter a state of reduced activity during periods of unfavorable conditions
d) studies the interactions between organisms and their environment

Conformers are organisms that
a) use energy to control internal conditions
b) change over many generations
c) do not regulate internal conditions
d) None of these

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