1. Practice

2. What do food chains show the transfer of?
Energy

3. How is energy transferred in this part of the food chain?
Photosynthesis

4. Explain how energy is transferred in this part of the food chain.
Eating

5. Explain how energy is transferred in this part of the food chain.
Decomposition
Decomp.

6. Decomp.

7. Decomp.

8. Put the organisms below into the correct order to construct a polar food chain.
Zooplankton 
Shrimp 
Arctic char 
Arctic seal
Orca
Shrimp
Arctic seal
Arctic char
Orca
zooplankton

9. ORCA ARE MURDERERS.

10. Explain what is wrong with the polar food chain below.
Energy is being transferred in the wrong direction

11. Differentiate between diagrams A and B below.
Energy A C O O
Matter B

12. A B Explain how the flow of energy differs from the flow of matter.
One direction
Does not cycle A C O O B

13. The autotroph below has energy
The autotroph below has energy. Explain why that energy, once it is taken by a rabbit and then a fox, cannot cycle back to autotrophs the way atoms can.
Used up

14. Which activity in living things uses up 60-70% of cells’ energy?
Active transport

15. Explain why organisms, even while they are at rest, are still losing energy.
Lost as heat

16. Just of the energy is passed on when living things get eaten.
10%
#40 in SG
100 10 1 .1
.01

17. Explain why there are no more trophic levels after the eagle.
No energy left to pass on
Used up
Lost as heat
100 10 1 .1
.01

18. Ocean food chains are different from land-based food chains because they involve microscopic organisms called .
plankton

19. The green, non-mobile plankton are called ; they are like microscopic .
phytoplankton
plants

20. The moving plankton are called ; they are like microscopic .
zooplankton
animals

21. Phytoplankton are important because they are the main
in the ocean.
autotrophs

22. A B Differentiate between processes A and B. Photosynthesis
Chemosynthesis B

23. Chemosynthesis occurs at the bottom of the ocean near
vents, where does not reach.
hydrothermal
light

24. Identify the energy source in a hydrothermal vent ecosystem.
Chemicals

25. Identify the autotrophs in a hydrothermal vent ecosystem.
Chemosynthetic bacteria