Ecological Levels and Relationships

What is an organism that gets its food by eating other living organisms?

• Consumer

• Producer

• Autotroph

• Decomposer

Which of the following best describes the term 'ecological niche'?

• The physical space an organism occupies

• The role and position a species has in its environment

• The genetic makeup of a species

• The number of individuals in a population

Which statement does NOT describe a relationship shown in the food web?

• Mountain lions are predators of rabbits

• Owls get energy from mice and crickets

• elk feed on trees and shrubs

• rabbits eat grass and are parasites of shrubs

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Where would a herd of buffalo be placed on the diagram?

• Individual

• population

• community

• ecosystem

Using the food web above, what would happen if the Caterpillar was removed from this food web?

• the number of grasshoppers would increase

• the snake population would decrease due to caterpillars being the snakes only food source

• nothing would happen

• the snake population would increase

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This image shows that:

• mice are primary producers because they create their own energy.

• only ten percent of energy moves from one trophic level to the next.

• energy is measured in jilometers.

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What would happen if sea stars were removed from the coral reef community?

• mussels and sea urchins would disappear.

• the coral reef community would be destroyed.

• fish would become terrestrial species.

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Humans can be infected by tape worms. The tape worm gets a place to live in the intestines of the human. The human loses weight and nutrients due to the tape worm. This is an example of:

• Parasitism

• Mutualism

• Commensalism

• Predation

Which of the following terms would be a biotic part of an environment?

• sunlight

• dead dragonfly

• solar energy

• air

What is mutualism?

• one organism feeds on the other

• both organisms benefit from their relationship

• one organism benefits while the other is harmed

• one organism benefits and the other neither benefits or is harmed

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