Energy Models

What would happen to the bird if the green fish died out?

• the bird population would grow

• the bird population would die out

• the smaller fish will die out

What is the bottom layer of the an energy pyramid?

• producer

• tertiary consumer

• Secondary consumer

• primary consumer

the top layer of an energy pyramid a primary consumer?

• true

• false

What does an energy pyramid show?

• Energy flow in a community

• Longest lifespans

• The stronger animal the higher it is on the pyramid

What would happen if their were no producers?

• Every population would grow larger

• Everything would die out

• The animals would make their own food

A pyramid shape is used to show the amount of available energy at each trophic level because... 

• energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up. 
• energy increases up the food chain just like the pyramid shape gets smaller as you go up. 
• energy amounts are the same at each trophic level

What makes an energy pyramid different than a food web or chain?

• It shows energy flowing from the top of the chain and downward. 
• The tropic levels are the opposite
• It shows the amount of energy in each trophic level
• It shows specific predator/prey relationships

Which organism in figure 1 contains the most available energy?

• plants
• mountain lions
• hawks
• none of the above

Example of a consumer

• flower

• tree

• algae

• hawk

A tree is a ....

• composer
• decomposer
• producer