Food Chains, Webs and Energy Pyramids

The largest part of an ecosystem is always the ________________.

• Primary Consumers

• Primary Producers

• Quarternary Consumers

• Secondary Consumers

On average how much energy is passed to a higher level in the food web?

• 90%

• 25%

• 10%

• 50%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How do producers obtain energy?

• They conduct photosynthesis.

• They consume plants.

• They consume primary consumers.

• They consume secondary consumers.

Tags

NGSS.MS-LS1-6

Type of model to show the amount of energy available for each step (or trophic level) of a food chain.

• Food chain

• Food web

• Food pyramid

• Food

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which is an example of a primary consumer?

• A cow

• A wolf

• The sun

• A snake

Tags

NGSS.MS-LS2-2

What are producers?

• organisms that use sunlight to make food

• organisms that eat other organisms

• an organism that eats only plants

• an organism that gets energy by breaking down dead organisms

Tags

NGSS.MS-LS2-3

In an ecosystem, snakes feed on frogs, which feed on mosquitoes. Use of a bug spray has decreased the number of mosquitoes. What will probably happen to the number of frogs and snakes?

• Frogs will increase, snakes will increase

• Frogs will increase, snakes will decrease

• Frogs will decrease, snakes will increase

• Frogs will decrease, snakes will decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A food chain shows the transfer of ___ from one organism to another. 

• matter

• consumers

• energy

• habitat

Tags

NGSS.MS-LS2-3

In this food chain, what will happen if the frogs become extinct?

• The snakes will increase.

• The grasshoppers will decrease.

• The eagles will remain the same.

• The grasshoppers will increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How much energy is passed on to the next trophic level in a food chain?

• 100%

• 90%

• 25%

• 10%

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3