Ecosystem

A student's model of a closed ecosystem is shown. The student plans to add land snails to the model in order to show how the snails interact with different parts of the ecosystem.

What should the student add to model so the snails will survive?

• Fish to provide food

• Sticks to provide a place to hide

• Deep water to provide carbon dioxide

• Living plants to provide oxygen

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5.9(A)

Students study barracudas. They gather some observations of barracudas. A barracuda is shown. Which observation describes barracudas interacting with the living elements of their ecosystem?

• Barracudas can travel quickly using surface ocean currents.

• Barracudas live around hard structures such as oil rigs and jetties.

• Barracudas are predators of other fish.

• Barracudas tend to live in warm waters.

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5.9(A)

A zookeeper sets up a habitat for a certain species of rabbit. Which answer choice describes the rabbit as it interacts with two nonliving parts of the rabbit's habitat?

• The rabbit breathing air while running down a rocky path

• The rabbit licking its fur while feeding its young

• The rabbit hiding under plants from loud noises

• The rabbit nibbling on vegetation inside the habitat

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5.9(A)

Which of these describes one or more living organisms that depend on another living organism to survive?

• Bacteria living in the mouth of a horse

• Ivy plants growing up a fence to obtain more sunlight

• Mold living on a hard, rocky surface

• An angelfish releasing carbon dioxide into pond water

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5.9(A)

Which of the following ecosystems would likely have the highest biodiversity?

• Tundra

• Desert

• Rainforest

• Polar ice caps

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NGSS.MS-LS2-5

In which ecosystem would you most likely find a wide variety of plant and animal species due to high levels of precipitation and warm temperatures year-round?

• Desert

• Tundra

• Tropical rainforest

• Temperate forest

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DOK Level 2: Skill/Concept

In which type of ecosystem would you find organisms adapted to survive with minimal water?

• Tropical rainforest

• Desert

• Tundra

• Temperate forest

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DOK Level 2: Skill/Concept

Which of the following ecosystems is characterized by extremely low temperatures, little precipitation, and permafrost?

• Desert

• Tropical rainforest

• Tundra

• Grassland

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DOK Level 2: Skill/Concept

What distinguishes a freshwater ecosystem from a marine ecosystem?

• The types of plants found in them

• The temperature of the water

• The salt concentration in the water

• The types of animals found in them

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DOK Level 2: Skill/Concept

Which ecosystem is primarily found in regions with low rainfall and sparse vegetation?

• Tropical rainforest

• Desert

• Tundra

• Temperate forest

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DOK Level 2: Skill/Concept