Bellringer: Trophic Level Review

Use the food web and your foundations document to help complete the table for each trophic level.

a

b

c

d

e

f

g

h

Snake, Eagle

Organisms that eat Producers

Plants, algae, some bacteria

Producer

Tertiary Consumer

Frog, Spider

Organisms that eat primary consumers

Primary Consumer

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What population in this food web is an omnivore?

• Blue jays

• Squirrels

• Raccoons

• Hawks

If 5,000 kg of mass is present in the producer 

population, approximately how much biomass will 

secondary consumers contain?

• 2,500 kg

• 250 kg

• 500 kg

• 50 kg

Tags

NGSS.MS-LS2-3

500 kilojoules (kJ) of energy are available in the fish 

population. How much energy was originally produced 

by the algae and phytoplankton?

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

When the organisms in the pyramid to the right die, 

decomposers (bacteria and fungi) and detritivores 

(lobsters, crabs, worms, and snails) consume and 

break down the decaying tissue. If decomposers 

recycle matter back to the ecosystem, what population 

receives this matter as a result?

• Sharks

• Shrimp and krill

• Algae and Phytoplankton

• Fish

Tags

NGSS.MS-LS2-3