Competition for Resources

The population of deer in a certain area is monitored over a period of six years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

• Wild dogs, which prey on deer, were being hunted more than usual.

• Snowfall in the previous spring was higher than the yearly average.

• Humans introduced grazing animals that feed on the same plants as the deer.

• More insects that pollinate flowering plants move into the ecosystem.

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Plants compete for air, water, ________ within ecosystems.

• space, and sound

• sunlight, and wind

• space, and sunlight

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Living things depend on many different _________ in order to survive.

• resources

• environments

• ecosystems

• interactions

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_______ occurs when two organisms are trying to acquire or get the same resources.

• Symbiosis

• Competition

• Predation

• Collaboration

What factor would cause animals of the same species to begin competing with one another?

• increase in precipitation         

• the presence of decomposers

• the introduction of a new food source

• limited supply of resources

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Two male deer fight over a female. This is an example of

• Symbiosis

• competition

• predation

When two different species compete for resources, it is ____________ competition.

• interspecific

• habitat

• symbiosis

• intraspecies

when resources are limited and organisms struggle to obtain those resources

• competition

• mimicry

• biodiversity

• survival of the fittest

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What is the term for the interaction where organisms vie for the same resources in an ecosystem?

• Mutualism

• Competition

• Parasitism

• Commensalism

Which of the following scenarios is an example of intraspecific competition?

• Two different species of birds competing for nesting sites

• Two male lions fighting for territory

• A plant and a fungus competing for sunlight

• A predator hunting its prey