Energy Flow Review

In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?

• 80%
• 90%
• 10%
• 20%

Tags

NGSS.MS-LS2-3

The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show what direction the energy is flowing between organisms.

• They represent how water is transferred within a habitat.

Tags

NGSS.MS-LS2-3

Organisms that create their own energy from sunlight or chemicals

• Herbivore

• Omnivore

• Autotroph

• Heterotroph

Tags

NGSS.MS-LS1-6

In any food chain, the first trophic level is occupied by

• Herbivores

• Carnivores

• Producers

• Secondary consumers

Tags

NGSS.MS-LS2-3

Look at the diagram of the food web. The arrows means “eaten by.”

What will happen if the number of snakes goes down?

• The owl will eat the grass

• The number of frogs will go down

• The hawk and owl will have less food

• The number of mice and grasshoppers will go up.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that produces its own food. A consumer is an organism in a food chain that obtains energy from producers or other consumers; consumers may be herbivores or carnivores.

Which food chain correctly describes the flow of energy in an ecosystem?

• grass → grasshopper → fish → human

• grasshopper → fish → human

• human → fish → grasshopper

• human → grasshopper → fish → grass

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Name the correct trophic level for level 3.

• Consumer

• Secondary

• Producer

• Decomposer

Tags

NGSS.MS-LS2-2

If there is 1000 Kcal available in the producers in trophic level 1, how much energy is available in the herbivores in trophic level 2?

• 10Kcal

• 1Kcal

• 100Kcal

• 1000Kcal

Tags

NGSS.MS-LS2-3

Which level has the fewest organisms?

• Tertiary

• Secondary

• Primary

• Quaternary

Tags

NGSS.MS-LS2-3

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

• There would be a decrease in the small bird population.
• There would be a decrease in the grass/flowers population.
• There would be a decrease in the mice population.
• There would be an increase in the grass/flowers population.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4