5.L.2.1: INTERDEPENDENCE OF PLANTS & ANIMALS IN ECOSYSTEMS

Which statement best describes both forest and grassland ecosystems?

• Both are aquatic (water-based) ecosystems.

• Both are terrestrial (land-based) ecosystems.

• Both are made up of mostly tress.

• Both are always found in cold places.

How are estuaries different from ponds, lakes, and oceans?

• Estuaries contain only salt water.

• Estuaries contain only freshwater.

• Estuaries contain a mixture of both salt water and freshwater.

• Estuaries are terrestrial (land-based) ecosystems.

What information does a food chain represent about an ecosystem?

• The flow of water through an ecosystem.

• The flow of food between animals.

• The flow of food between decomposers.

• The flow of energy from the sun, to producers, to a series of consumers.

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Bison, prairie dogs, and grasshoppers live in an area with fertile soil and tall grasses. In which ecosystem to they live?

• salt marshes

• ponds

• forests

• grasslands

What information does a food web represent about an ecosystem?

• The flow of food between animals.

• The flow of energy through an ecosystem.

• The flow of water through an ecosystem.

• The flow of food between decomposers.

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Some aquatic (water-based) ecosystems are a mixture of freshwater and salty water. They are rich in nutrients and provide a good environment for the offspring of many fish and shellfish.

Which ecosystem is best described by the characteristics above?

• A pond ecosystem

• A forest ecosystem

• An ocean ecosystem

• An estuary ecosystem

How do forest and grassland ecosystems compare?

• They have temperatures that vary based on their locations on Earth.

• They receive the same amount of rainfall each year.

• They are dark because they are shaded from sun light.

• They are dark because they are shaded from sun light.

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How do ocean and pond ecosystems compare?

• Oceans are shallower than ponds.

• Oceans include freshwater and ponds include saltwater.

• Oceans include more diverse organisms (plants and animals) than ponds.

• Ponds are large bodies of water divided by continents.

Which statement best describes an ecosystem?

• An ecosystem is all the organisms of the same kind in a particular area.

• An ecosystem is a forest or an ocean.

• An ecosystem is all the living and nonliving parts of the environment and how they interact with each other.

• An ecosystem is any organism, such as algae.

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What is the purpose of a food web?

• It is a visual representation that shows the flow of oxygen and carbon dioxide in an

  ecosystem.

• It is a visual representation that shows how nitrogen is used by plants and animals in an

  ecosystem.

• It is a visual representation that shows how producers use sunlight and carbon dioxide in

  the process of photosynthesis.

• It is a visual representation that shows overlapping food chains and all the paths energy

  can take can take in an ecosystem.

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