Unit 5B: Ecology: interactions Among Living Things

The struggle between organisms to survive as they attempted to use the same limited resources​

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​Some text here about the topic of discussion.

​Competition

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Interaction in which one organism kills another for food or nutrients​

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​Some text here about the topic of discussion.

​Predation

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Any relationship in which two species live closely together and at least one benefits​

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​Symbiosis

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A relationship in which both species benefit

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​Mutualism

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A relationship in which one species benefits and the other is neither helped not harmed​

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​Commensalism

+ 0​

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A relationship in which one organism lives with, on, or inside another organism and harms it

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​Parasitism

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An organism that benefits by harming another organism

​(example: mistletoe)

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​Parasite

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An organism on which a parasite lives

​(example: laurel oak)

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​Host

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Environmental factor that limits the growth and size of a population

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​Limiting

factors​

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Species that have naturally evolved in an area

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​Native

species​

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​species that enter new ecosystems and multiply, harming native species and their habitats

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​Invasive

species​

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​the removal of trees faster than forests can replace themselves

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​Deforestation

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​the growth of cites

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​Urbanization

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Match

Match the following

• 2 species live closely together

• both species benefit

• one species benefits, the other not helped or harmed

• one organism benefits, one is harmed

symbiosis

mutualism

commensalism

parasitism

• symbiosis

• mutualism

• commensalism

• parasitism

Match

Match the following

• fire, space, disease, food

• lion fish, armadillo

• sandhill crane, gopher tortoise

limiting factors

invasive species

native species

• limiting factors

• invasive species

• native species

Match

Match the following

• :) :)

  + +

• :) :I

  + 0

• :) :(

  + -

mutualism

commensalism

parasitism

• mutualism

• commensalism

• parasitism

Multiple Choice

the struggle between organisms to survive as they attempt to use the same limited resources

• competition

• predation

• symbiosis

• host

Multiple Choice

Interaction in which one organism kills another for food or nutrients

• predation

• competition

• mutalism

• urbanization

Multiple Choice

the removal of trees faster than forests can replace themselves

• deforestation

• limiting factors

• urbanization

Match

Match the following examples

• parasite

• native species

• invasive species

• host

tick

ibis

armadillo

human

• tick

• ibis

• armadillo

• human