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?

c. III

15. At which point on the curve has the

population reached the carrying capacity

or the maximum population density for its

environment?

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