Energy Flow Practice Questions

The efficiency of energy transfer from a lower trophic level to the next highest level is roughly

• 1%
• 10%
• 100%
• 1000%

Tags

NGSS.MS-LS2-3

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

NGSS.MS-LS2-3

Which of the following would provide the most energy in an ecosystem?

• Producers
• Herbivore
• Omnivore
• Carnivore

Tags

NGSS.MS-LS2-3

What is an example of a decomposer?

• Plum
• Mushroom
• Deer
• Bird

Tags

NGSS.MS-LS2-3

What is the first source of energy for all food webs?

• Plants
• Sunlight
• Mineral in the soil
• Decomposers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Why can't the top level contain a large number of organisms?

• Because as energy moves from the bottom to the top level, less and less energy is available to higher levels.
• Because the original energy from producers is the total energy available to all the organisms in the energy pyramid.
• because only about ten percent of the energy available at one level is transferred to the next level.
• all of the above

Tags

NGSS.MS-LS2-3

What does an energy pyramid represent?

• Food pyramids show the different food chains in a community.
• Energy pyramids show the same total matter at all levels.
• Shows the amount of energy available at each feeding level in an ecosystem.

Tags

NGSS.MS-LS2-3

What's a food web?

• A representation of all the feeding relationships within a community.
• A way of showing how matter and energy pass from one organism to another.
• A food chain provides a more complete model of feeding relationships within a community.