1.1 Competition in Ecosystems

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

• resources
• environments
• ecosystems
• interactions

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An invasive species is a plant or animal that is ________ to an ecosystem.

• not native
• just visiting
• beneficial
• not friendly

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When an organism depends on a factor for survival, this is called a ______________________ interaction.

• independent

• questionable

• dependent

• expendable

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Competition in an ecosystem occurs when

• animals get bored.

• more than one individual or population in an ecosystem relies (needs) the same limited resource.

• there is more than enough of a resources for every living organism.

• resources are unlimited.

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A group of individuals from the same species living and interacting together in the same ecosystem is called a

• organism.

• troup.

• zebra festival.

• population.

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Hawks and owls eat the same type of food and struggle with one another to get their food. What is this an example of?

• Competition

• Biotic factor

• Symbiosis

• Population

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Hawks and brown bears live together in the same habitat. There will be competition between the hawks and the brown bears only if which of the following is true?

• Brown bears hibernate during the winter while hawks remain active.

• Pesticides in the fish population affect hawks’ eggs and decrease their population.

• Both brown bears and hawks feed on the same species of fish.

• Both Shanna and Savanna feed on the same species of snakes.

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Which two organisms in this food web are COMPETING for food with each other?

• Cougar and Deer
• Rabbit and Snake
• Insects and Grass
• Shrew and Mouse

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Which two species most likely compete for water?

• X

• Y

• Z

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Which organisms in the food web compete for the same food source in this environment?

• Mice and bobcats

• Coyotes and bobcats

• Insects and coyotes

• Plants and mice

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