Food Chain and Food Webs

Energy Flow Through Food Webs

Multiple Choice

What is this image a picture of?

• food web

• food chain

• ecosystem

• energy chain

Multiple Choice

Energy in food webs is lost as ________at each movement up or in a food chain.

• vapor

• carbon

• heat

• oxygen

Multiple Choice

At the base of the food chain lie the ________.

• secondary consumers

• tertiary consumers

• primary consumers

• primary producers

Multiple Choice

The organisms that eat the primary producers are:

• secondary consumers

• tertiary consumers

• primary consumers

• primary producers

Multiple Choice

The organisms that eat the primary consumers are:

• secondary consumers

• tertiary consumers

• primary consumers

• primary producers

Multiple Choice

The organisms that eat the secondary consumers are:

• secondary consumers

• tertiary consumers

• primary consumers

• primary producers

Multiple Choice

How many trophic levels are in this image?

• 4

• 5

• 3

• 2

Fill in the Blanks

This group consists of organisms that break down dead organic material and wastes and sometimes are considered their own trophic level.

Fill in the Blanks

This a decomposer that uses chemical energy in dead matter and wastes to fuel their metabolic processes.

Fill in the Blanks

This a decomposer that uses chemical energy in dead matter and wastes to fuel their metabolic processes.

Multiple Choice

Other decomposers are detritus eaters or debris eaters. They are multicellular organisms such as earthworms, crabs, slugs, or vultures. They fragment it as well, making it more available for bacterial/fungal decomposers.

• herbivore

• autotroph

• detritivore

• consumer

Multiple Choice

A food web is NOT a mixture of many food chains in one ecosystem.

• true

• false

Multiple Choice

Do arrows in a food web go to the organism that is getting eaten or to what is eating it? The arrow goes to:

• the organism that is getting eaten

• what is eating it

Multiple Choice

True or False? Food webs usually do not show decomposers.

• true

• false