Relationship QUIZ

13. Which of the following is an example of predation:

a. Two male lions fighting for dominance of a pride. b. The goby fish warning a shrimp about danger so that they both retreat to the burrow the shrimp maintains. c. A roundworm living inside a dog and producing eggs which then get distributed to the environment through the dog’s feces. d. A fox hunting and eating a rabbit for food.

14. At which point on the graph is the population experiencing exponential growth?

a. I

b. II

c. III

15. At which point on the curve has the

population reached the carrying capacity

or the maximum population density for its

environment?

a. A

b. B

16. The obvious relationship demonstrated by a food chain is:

a. Commensalism

b. Predation

c. Mutualism

d. Parasitism

17. Which of the following best describes what is happening at time 1 on the graph above?

a. The decreasing predator population is allowing for an increase in the prey population. b. The increasing prey population is causing a decrease in the predator population. c. The decreasing prey population is allowing for an increasing predator population. d. The increasing predator population is causing a decrease in the prey population.

18. The graph below shows that changes in two populations of herbivores in a grassy field. A possible reason for these changes is that

A. all of the plant populations in this habitat decreased B. population B competed more successfully for food than population A did C. population A produced more offspring than population B did D. population A consumed the members of population B

19. Predation is a positive benefit to the population of prey organisms because it tends to keep them below their ______.

a. trophic level b. carrying capacity c. competition level d. exponential growth

20.