- 1. True or false. Organisms compete for resources, like food and water, in an ecosystem.
A) True
B) False
- 2. What would most likely happen if Mrs. Welser brought in five bags of Hot Cheetos to class and there are fifteen students?
A) Everyone would get along and there wouldn't be a single problem.
B) There would be a competition.
- 3. Why can zebras and wildebeests live together with little competition?
A) They cannot live together.
B) Zebras and wildebeests will always compete.
C) They eat different things.
- 4. If the Savannah becomes much wetter than normal, what would be the most likely effect on wildebeests and gazelles?
A) There would be more competition because there would be too much grass and water.
B) There would be less competition because more grasses would grow.
- 5. Look at the graph on p. 178. In what year were there the most moose?
A) 1960
B) 1980
C) 1995
D) 2000
- 6. Look at the graph on p. 178. In what year were there the most wolves?
A) 1970
B) 1995
C) 1965
D) 1980
- 7. True or false. Predators often have eyes that are in front of their head.
A) False
B) True
- 8. The eyes of prey are often on the __________ of their head.
A) back
B) front
C) side
- 9. Make a list of two reasons why animals might compete.
- 10. A predator is often the animal that is doing the __________.
A) hunting and killing
B) hiding
- 11. Prey is often the animal that is doing the ____________.
A) hiding
B) hunting and killing
- 12. True or false. A useful adaptation for prey is the ability to look like a stick or a rock.
A) False
B) True
- 13. Look at all of the organisms on p. 179. Which one do you think is the most interesting? Why?
- 14. A parasite is the organism that is _________ in a relationship.
A) benefiting
B) harmed
- 15. A host is the organism that is _________ in a relationship.
A) harmed
B) benefiting
- 16. Look at the pictures on p. 181. True or false. Fleas and ticks get food by piercing the skin of animals and drinking their blood.
A) False
B) True
- 17. As bees collect nectar from flowers, they spread pollen from one flower to another. Both species benefit. Which type of relationship is this?
A) mutualism
B) commensalism
C) parasitism
- 18. Barnacles live on the side of a whale. The barnacles benefit but do not help or harm the whale. What kind of relationship is this?
A) mutualism
B) commensalism
C) parasitism
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