Energy Flow in Ecology

The primary consumer in this food chain is the ____________.

• Frog

• Eagle

• Grasshopper

• Python

Tags

NGSS.MS-LS2-3

Which of the animals in this food web is a secondary consumer?

• Hawk

• Lizard

• Mouse

• Snake

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

The largest part of an ecosystem is always the ________________.

• Primary Consumers

• Primary Producers

• Quarternary Consumers

• Secondary Consumers

The arrows in a food chain or web represent ...

• They point to the organism that is being eaten.

• It shows how sunlight flows within an ecosystem.

• They show the 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

Which organism on this energy pyramid would have the most energy? Which would have the least?

• Sharks would have the most, phytoplankton would have the least

• Herring would have the most, small crustaceans would have the least

• Phytoplankton would have the most, sharks would have the least

• Mackerel would have the most, Herring would have the least

Tags

NGSS.MS-LS2-3

How much energy will be available to the tertiary consumer in the food pyramid?

• 10 kJ

• 1000 kJ

• 100 kJ

• 10000 kJ

Answer explanation

Each level only gets 10% of the energy from the level before it, so drop a 0 as you go to the next level.

Tags

NGSS.MS-LS2-3

The approximate amount of energy lost as heat as energy is passed to the next trophic level?

• 10%

• 40%

• 50%

• 90%

Tags

NGSS.MS-LS2-3

Which supports the 10% energy rule?

• Waste is broken down by decomposers and recycled through the ecosystem

• Fewer organisms are at the top of the chain because there is less energy to sustain life at the top

• Not all organisms at the lower trophic levels will be eaten

• Only 10% of organisms are consumed because you can't digest the other molecules10

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is an organism that consumes another organism for nutrients?

• heterotroph

• decomposer

• autotroph

• detritivore

Tags

NGSS.MS-LS2-3

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

• autotroph

• producer

• heterotroph

• mutualist

Tags

NGSS.MS-LS2-3