7.5.B: Ecosystem Energy

Plants make their own food and that is why they are called _____________.

 

• producers

• consumers

Animals must eat other living things to survive. For this reason, they are known as ______________.

 

• producers

• consumers

The arrow always points to the organism that is being eaten.

• True

• False

How much of the energy is stored by primary consumers (trophic level 2)?

• 10%

• 50%

• 1%

Most of the energy consumed by organisms is lost as heat.

• False

• True

If there were no predators, what would happen to the frog population?

• The frog population would increase. 

• There would be no change to the frog population. 

Food webs are made of many interacting food chains.

• False

• True

The variety of organisms living in a given area is known as

• biodiversity

• ecosystem

• biome

• biosphere

Which of the following is likely to happen if the population of grasshoppers was killed with a pesticide?

• The population of birds would increase.

• The population of frogs would decrease.

• The population of rabbits would decrease.

Decomposers include organisms like bacteria and fungus.

• True

• False