Ecosystems and Organisms Quiz

Which of the following is an example of a terrestrial ecosystem?

• Ocean

• Desert

• River

• Estuary

What is the primary role of producers in an ecosystem?

• To consume other organisms

• To decompose dead organisms

• To produce oxygen through photosynthesis

• To regulate the temperature

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Which of the following is a biotic factor in an aquatic ecosystem?

• Water pH

• Fish

• Sunlight

• Temperature

What is the role of decomposers in an ecosystem?

• To produce food for other organisms

• To consume other living organisms

• To break down dead organisms and recycle nutrients

• To regulate the climate

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NGSS.MS-LS2-2

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Which of the following ecosystems is characterized by the mixing of freshwater and saltwater?

• Lake

• River

• Estuary

• Ocean

What type of consumer is a lion in a savannah ecosystem?

• Primary consumer

• Secondary consumer

• Tertiary consumer

• Producer

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NGSS.MS-LS2-3

Which of the following is NOT a producer?

• Algae

• Oak tree

• Mushroom

• Grass

What defines an aquatic ecosystem?

• It is found only in saltwater environments.

• It is characterized by the presence of land animals.

• It includes ecosystems in both freshwater and saltwater environments.

• It is defined by the absence of plants.

Why are estuaries important to aquatic life?

• They provide a unique habitat with a mix of fresh and saltwater.

• They are the only ecosystems where water exists.

• They have no predators, making them safe for all aquatic life.

• They are warmer than other aquatic ecosystems.

What is the main difference between biotic and abiotic factors in an ecosystem?

• Biotic factors are living, while abiotic factors are non-living.

• Biotic factors can only be found in terrestrial ecosystems.

• Abiotic factors are always harmful to ecosystems.

• Biotic factors do not influence the ecosystem as much as abiotic factors.

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