Energy Pyramid and Food Webs

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-LS1-6

NGSS.MS-LS2-3

An energy pyramid represents what?

• How much sunlight is available for the ecosystem to use. 

• How much energy a particular organism needs. 

• How much energy is needed to build a pyramid. 

• The amount of energy available to the next 'feeder' in a food web.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In the energy pyramid here, which organisms have the most energy available?

• Producers

• Carnivores

• Herbivores

• Top Predator

Tags

NGSS.MS-LS1-6

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

If the fish population decreases, what is the most direct effect this will have on the aquatic ecosystem?

• The krill population will only be consumed by seagulls.

• The phytoplankton population will increase in size.

• The zooplankton population will increase in size.

• The leopard seals will all die from lack of food.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Where does the energy start in this food chain?

• Plant

• Sun

• Deer

• Wolf

Tags

NGSS.MS-LS2-3

An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph

• Producer

• Consumer

• Mutualist

Tags

NGSS.MS-LS2-3

What is a trophic level?

• Each level represented within a food chain or web.

• Levels of ecosystems that the world is divided into.

• Different levels of nutrients present within an organism.

• The levels of sunlight an autotroph needs to survive. 

How much energy is available to be passed on to the next trophic level in an ecosystem?

• 100%

• 10%

• 50%

• 75%

Tags

NGSS.MS-LS2-3

A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?

• A

• B

• C

• D

Tags

NGSS.MS-LS2-3