Disruptions of the Cycling of Matter

Kudzu is an invasive plant that can grow as much as one foot in a day. A partial food web for an ecosystem is shown. Suppose kudzu invades this ecosystem. 

 

Select three organisms that would most likely compete with kudzu in this ecosystem. 

Answer explanation

A Kudzu is a plant (producer) so it will compete with other producers.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

The flow of energy in a grassland ecosystem is shown. Based on the diagram, which two populations best represent trophic levels that receive the LEAST amount of the total energy provided to the ecosystem by the grass?

• Crickets and sparrows

• Hognose snake and Owls

• Rabbits and mice

• Toads and spiders

Answer explanation

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

A food web representing a Gulf Coast ecosystem is shown. Based on this food web, which organism occupies multiple trophic levels?

• Gulf pipefish
• Loggerhead sea turtle
• Canada goose
• Eastern cottontail

Answer explanation

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

An energy pyramid for an ecosystem is shown. Based on the energy pyramid, how much energy would be stored in the tertiary consumers in this ecosystem?

• 20 kcal
• 500 kcal
• 100 kcal
• 2 kcal

Tags

NGSS.MS-LS2-3

Select TWO factors that are responsible for the inefficiency of energy transfer from one trophic level to another.

• organisms lose energy to the environment as heat

• some parts of the organisms are not eaten by consumers

• omnivores get energy from producers and consumers

• carnivores obtain energy from consumers only

Tags

NGSS.HS-LS2-4

A partial Texas food web is shown is above. 

 

Identify and explain ONE effect that would occur if a disease suddenly reduced the population of Texas horned lizards in the food web.

 

Review the food web carefully. Then enter your answer and explanation in the box provided. 

Tags

NGSS.MS-LS2-3

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List organisms in each trophic level: Producers, Primary Consumers, Secondary Consumers,

Tertiary Consumers. Then Predict the effect of what would occur if rabbits were removed from the food web.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

List organisms in each trophic level: Producers, Primary Consumers, Secondary Consumers,

Tertiary Consumers. Then Predict the effects of the algae being removed from the ecosystem.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

List organisms in each trophic level: Producers, Primary Consumers, Secondary Consumers,

Tertiary Consumers. Then Predict the effects of the crab being removed in the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Identify and explain ONE effect overfishing would have on the food web.

Review the food web carefully. Then enter your answer and your explanation in the space below.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-ESS3-4