SHW - Pg. 11

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CH. 54: ECOSYSTEMS

1. What is meant by the ”trophic structure” of a community?
- The routes of energy flow and chemical cycling.

2. List examples of marine and terrestrial food chains?

Type
Marine
Terrestrial

Primary Producer
Phytoplankton
Algae

Primary Consumer
Zooplankton
Grasshopper

Secondary Consumer
Salmon
Mouse

Tertiary Consumer
Killer whale
Eagle


3. What does a food web show that isn’t indicated by a food chain?
- Decomposer and all the possible routes of energy flow and chemical cycling.

4. What limits the length of food chain?
- the amount of energy that gets transferred from one level to the next.