Ecosystem Variables Assessment

What is the definition of an ecosystem?

• A group of the same species living in an area

• A community of living and non-living organisms interacting with their environment

• A single organism's habitat

• A collection of non-living elements

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DOK Level 1: Recall

Which of the following is a limiting factor in an ecosystem?

• Unlimited food supply

• A specific food source

• Infinite space

• Constant temperature

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DOK Level 1: Recall

Which of the following is an example of carrying capacity?

• The maximum number of fish a pond can support

• The number of species in a rainforest

• The variety of plants in a garden

• The speed of a cheetah

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DOK Level 1: Recall

How does biodiversity affect ecosystems?

• It decreases the stability of ecosystems

• It makes the ecosystem heathier

• It has no effect on ecosystems

• It only affects aquatic ecosystems

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DOK Level 1: Recall

Which environmental variable can impact the carrying capacity of an ecosystem?

• The color of the sky

• The amount of available water

• The shape of the land

• The type of soil

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DOK Level 1: Recall

Identify a factor that can affect biodiversity in an ecosystem.

• Climate change

• The number of stars in the sky

• The color of the ocean

• The height of mountains

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DOK Level 1: Recall

Explain how a decrease in food supply can be a limiting factor in an ecosystem.

• It leads to an increase in population

• It causes a decrease in population size

• It has no effect on the population

• It increases the birth rate

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DOK Level 2: Skill/Concept

Describe how temperature can be a limiting factor for certain species in an ecosystem.

• It allows all species to thrive equally

• It can limit the survival of species not adapted to extreme temperatures

• It has no impact on species survival

• It only affects plant species

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DOK Level 2: Skill/Concept

What role do environmental variables play in determining the biodiversity of an ecosystem?

• They have no role

• They determine the types of species that can survive

• They only affect the weather

• They only influence human activities

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DOK Level 2: Skill/Concept

What is an example of a biotic limiting factor in an ecosystem?

• Temperature

• Water availability

• Disease

• Soil type

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DOK Level 1: Recall