Energy Flow Worksheet
Name:
P:
_
1.
What are autotrophs?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
2.
Why are autotrophs also called producers?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
3.
What do autotrophs do during photosynthesis?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
4.
Heterotrophs are also called _____________________________________________
5.
Complete the table below about types of heterotrophs:
6.
What is a food chain?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
7.
What is a food web?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
8.
What is a trophic level?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
9.
In a food web, what organisms make up the first trophic level? _______________________________________
10. What are the three ecological pyramids? _________________________________________________________
11. Why is it that only part of the energy stored in one trophic level is passed on to the next level?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
12. How much energy is transferred from one trophic level to the next? ___________________________________
13. What does a biomass pyramid represent?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
14. What does a pyramid of numbers show?
________________________________________________________________________________________________________________
________________________________________________________________________________________________________________
15. In the space below, draw out an energy pyramid as well as a biomass pyramid:
(Biomass Pyramid Picture)
(Energy Pyramid Picture)
16. Given the food chain below, answer the questions that follow:
17. Given the food web below, answer the questions that follow:
a.
b.
c.
d.
What are the producers?
What are the primary consumers?
What are the secondary consumers?
What are the tertiary consumers?