EOC REVIEW: ECOLOGY- Energy in Ecosystems

Question 1

What are trophic levels?

Answer 1

Hierarchical levels of an ecosystems

Question 2

What do energy pyramids show?

Answer 2

The flow of energy through the trophic levels

Question 3

What do energy pyramids illustrate?

Answer 3

They illustrate how much energy is available at each level

Question 4

What is the 10% rule?

Answer 4

10% of an organism’s energy is incorporated into the next trophic level.

Question 5

How is energy lost?

Answer 5

Energy is lost as heat and waste products.

Question 6

What happens as energy moves up the food chain?

Answer 6

The higher up the food chain an animal is, the less chemical energy is present.

Question 7

What does a biomass pyramid show? What is biomass?

Answer 7

It shows the relative amount of biomass at each trophic level. Biomass is the total quanitiy of organisms in an area.

Question 8

What is a trophic cascade?

Answer 8

A change in population has an effect on the whole of the food chain.