Ecology Quiz

What is an organism in ecological terms?

• All of the living (biotic) and non-living (abiotic) parts of an environment that work together

• All of the organisms of the same kind in a specific area

• One single living being (plant or animal)

• All of the biotic components (plants and animals) in an ecosystem

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What defines a community in an ecosystem?

• All of the living (biotic) and non-living (abiotic) parts of an environment that work together

• All of the organisms of the same kind in a specific area

• One single living being (plant or animal)

• All of the biotic components (plants and animals) in an ecosystem

Which of the following is NOT a symbiotic relationship?

• Mutualism

• Commensalism

• Parasitism

• Predation

What is mutualism?

• Relationship in which one organism benefits and the other is neither benefited nor harmed

• Relationship in which one organism benefits (parasite) and the other is harmed (host)

• Both organisms in the relationship benefit

• Relationship in which one organism benefits and the other organism also benefits, but over time

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What does the term 'abiotic' refer to in an ecosystem?

• Living or once living organisms in an ecosystem

• Non-living parts of an ecosystem

• The biotic components such as plants and animals

• Populations of organisms of the same kind

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Which factor does NOT lead to a decrease in population?

• Deaths

• Decrease in food supply

• Emigration

• Increase in food supply

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What is a food chain?

• A complex model that shows multiple feeding relationships.

• A simple model that shows feeding relationships within one pathway.

• A graphical representation of energy usage in ecosystems.

• A detailed map of an ecosystem's species and their numbers.

Which of the following best describes a food web?

• A simple linear sequence of who eats whom in an ecosystem.

• A diagram that shows only the primary consumers and producers.

• A complex diagram that shows multiple food chains together.

• A chart that displays the population of organisms in an ecosystem.

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What do producers do in an ecosystem?

• Consume other organisms for energy.

• Decompose organic material.

• Make their own food through photosynthesis.

• Eat primary consumers.

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Approximately how much energy is passed on from one trophic level to the next?

• About 5%

• About 10%

• About 20%

• About 50%

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