Name: ________________________
Date: _________
Period: _____
Ecology Study Guide
1. Construct a food web using the following organisms…Squirrel, hawk, bear, grass, flowers, seeds
and nuts. Include the sun, and label each organism as a P-producer, or C-consumer. **You do not
need to draw the organisms, just list and label them.***
2. When you eat steak, where did the steak (cow) originally get its energy from? Draw an energy
pyramid and include the following trophic levels: “you,” cow, and what organism or factor the cow
got its’ energy from. How much energy is passed from one trophic level to the next?__________
3. A symbiotic relationship where one species benefits and the other is harmed is called what? Give
an example, too
4. A symbiotic relationship when both species benefit is called what? Give an example, too
5. A symbiotic relationship where one species is benefitted and the other is not affected is called
what? Give an example
6. What is the original source of energy for all living things? ___________________________
7. Describe Limiting Factors and give 3 examples.
8. The maximum amount (number) of a species that and ecosystem can support is called the
__________________________.
9. Describe how Roswell is an ecosystem. Give 2 examples of abiotic things, and 2 examples of biotic
things.
10. _____ One important abiotic factor in an ecosystem is the___________________
a. amount of plants b. amount of animals c. kinds of algae d. temperature
11._____ Two members of the same species fight over who gets a certain food. Members of
different species try to take over a certain nesting area. These are both examples of _________.
a. Community
b. Competition
c. Mutualism
d. Commensalism
12._____ If scientists were studying the egrets, herons, marsh crabs, and cordgrass, but not the
water or rocks in a salt marsh, what word below describes what they are studying?
a. Individual organism
b. Population
c. Community
d. Ecosystem
Use the food web diagram to answer questions 13-16.
13. _____ Three organisms on the food web have arrows pointing away from them and no
arrows pointing towards them. They are____________________
a. Omnivores b. Herbivores
c. Decomposers d. Producers
14. _____ What does the arrow between the grasshopper and the coyote represent?
a. Energy flowing from producers to consumers
b. Energy flowing from consumers to producers
c. Energy flowing from the coyote to the grasshopper
d. Energy flowing from the grasshopper to the coyote
15. _____ Based on energy pyramids, which animals show the correct flow of energy from
greatest to least?
a. Hawk  Grass  Deer
b. Deer  Tree  Wolf
c. Grass  Deer  Mountain Lion
d. Squirrel  Hawk  Grasshopper
16. If the Nuts/Berries makes 6500J of energy, how much energy does the Hawk get in the
following food chain: nuts/berriessquirrelhawk? ___________________