apes 1.1

Directions: Select the choice that best fits each statement. The following question(s) refer to the following possible relationships between organisms in an ecosystem. Exemplified by moss growing on a tree trunk in a forest A. Commensalism B. Parasitism C. Mutualism D. Predation C. Competition

A

Directions: Select the choice that best fits each statement. The following question(s) refer to the following possible relationships between organisms in an ecosystem. Exemplified by ticks feeding on a deer A. Commensalism B. Parasitism C. Mutualism D. Predation E. Competition

B

In a fish species, the number of eggs that hatch and survive for one year varies depending on the number of eggs that were produced. As the number of eggs produced increases past a threshold number, the survival rate of the offspring decreases. Which of the following statements best explains why only a limited number of offspring can survive in a fish population? A. Resource partitioning allows similar species to coexist in the same ecological community. B. The number of fish surviving after one year is proportional to the number of eggs produced. C. The chance of survival decreases when there is interspecific competition for resources among surviving yearlings. D. More yearling fish survive beyond one year when there is an abundance of prey species present.

C

The graph below shows the results obtained when two species of Paramecium were grown together in the same medium. The graph above best exemplifies A. the demographic transition B. sustained logarithmic growth C. the edge effect D. competitive exclusion E. the normal distribution

D

Directions: Select the choice that best fits each statement. The following question(s) refer to the following possible relationships between organisms in an ecosystem. Exemplified by starlings displacing bluebirds from nesting sites A. Commensalism B. Parasitism C. Mutualism D. Predation E. Competition

E