Biotic and Abiotic with Ecological Interactions

Which of the following explains the relationship between a population and a community?

• Communities are made up of populations.

• Populations are made up of communities.

• The two words mean exactly the same thing.

• Populations and communities have no relationship.

If an area is overpopulated, _____.

• there will not be enough food for the overpopulated species

• there will not be enough food for some other species in the area

• individual members of the overpopulated species may move away

• all of the above

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When a Gila monster uses a rock for shade from the noonday sun, it is interacting with __________

• an abiotic factor

• another organism

• an ecosystem

• its community

10. Producers are found at the bottom of a energy pyramid or food chain because producers ___.

• provide energy for consumers

• have less mass than consumers

• have fewer species than consumers

• depend on consumers

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After many decades of being absent from Yellowstone National Park, gray wolves are being reintroduced. As the wolf populations have increased, elk and bison populations are beginning to decrease. Which is another consequence of the reintroduction of wolves that is likely to occur in Yellowstone Park?

• Both elk and bison will become extinct.

• Populations of scavengers will decrease.

• Bears and coyotes will become more numerous.

• Populations of plants consumed by elk and bison will increase.

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Which best explains the difference between habitat and niche?

• Habitat is where the animal finds food, but niche describes its physical characteristics.

• Habitat is where the animal hibernates, but niche determines how well it competes.

• Habitat is where the animal lives, but niche defines its role in the ecosystem

• Habitat is where the animal sleeps, but niche explains how it defends itself

Changes to abiotic factors in an environment can impact biotic factors. Which statement is the BEST example of this situation?

• Heavy rainfall increases soil erosion.

• Melting glaciers cause sea levels to rise.

• Cold temperatures cause rocks to weather.

• Drought conditions increase competition among consumers

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Farmers in Wyoming were concerned because some of their chickens were being preyed upon by hawks that lived in areas around their ranches. The farmers grouped together and hunted the hawks until they were no longer in their area. Which would most likely happen next?

• The chicken population would go down.

• Populations of mice and rats would increase.

• Another bird of prey would replace the hawk.

• The chickens would have a lower rate of disease (sickness).

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_____ consist of all the biotic and abiotic things in an area

• Biosphere

• Ecosystem

• Community

• Population

_________ is a group of organism of the same species

• Biosphere

• Ecosystem

• Community

• Population

• Predation

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