Ecosystem Chapter 18.1

What is the relationship between an ecosystem and a community?

• They are the same thing

• A community is part of an ecosystem

• An ecosystem is part of a community

• They are completely unrelated concepts

Which of the following best describes a species' niche?

• The physical location where it lives

• Its role in the food chain

• Its particular way of making a living in an ecosystem

• The number of individuals in its population

How does an abiotic factor differ from a biotic factor in an ecosystem?

• Abiotic factors are living, while biotic factors are non-living

• Abiotic factors are non-living, while biotic factors are living

• Abiotic factors only affect plants, while biotic factors affect animals

• There is no difference between abiotic and biotic factors

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Which of the following statements about ecosystems is FALSE?

• Ecosystems can be found underwater

• Ecosystems can only exist on a large scale

• There are ecosystems inside the human body

• A small ecosystem can be part of a larger ecosystem

In the context of ecosystems, what is the relationship between a population and a community?

• They are interchangeable terms

• A population consists of multiple communities

• A community consists of multiple populations

• Population refers to animals, while community refers to plants

Which of the following best describes the concept of biodiversity in an ecosystem?

• The number of different species in an area

• The total number of organisms in an ecosystem

• The genetic variety within a species

• All of the above

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How might the introduction of a non-native predator species affect an ecosystem?

• It would have no significant impact

• It could disrupt existing food chains

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What is the primary difference between a habitat and a niche?

• A habitat is where an organism lives, while a niche is how it lives

• A habitat is biotic, while a niche is abiotic

• A habitat is specific to animals, while a niche is specific to plants

• There is no difference between habitat and niche

Which of the following is an example of a symbiotic relationship in an ecosystem?

• A lion hunting a gazelle

• A tree competing with grass for sunlight

• Bacteria in the gut of a human helping with digestion

• A butterfly drinking nectar from a flower

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How might climate change potentially impact ecosystems?

• It would only affect polar ecosystems

• It could alter species distributions and interactions

• It would have no effect on aquatic ecosystems

• It would only impact plant species

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